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4th Grade Reading EOG Practice

Total questions: 45

Worksheet time: 9hrs 10mins

Name
Class
Date
1.

In the dense Amazon rainforest, leaf cutter ants work tirelessly day and night. These remarkable insects can carry pieces of leaves weighing up to 50 times their body weight! They don't actually eat the leaves, though. Instead, they use them to grow a special type of fungus in their underground nests. This fungus serves as food for the entire colony.

Which statement best describes the main idea of this paragraph?

a)

Leaf cutter ants are the strongest insects in the rainforest

b)

The Amazon rainforest is home to many types of insects

c)

Leaf cutter ants use leaves to grow food for their colony

d)

Underground nests protect ants from predators

2.

Sarah stared out her bedroom window at the swirling snow. The weatherman had predicted only a light dusting, but already six inches covered the ground. Her thoughts drifted to her warm mittens and the sled in the garage. Maybe this unexpected storm wasn't so bad after all.

What can you infer about Sarah's feelings toward the snow?

a)

She is worried about the weather forecast being wrong

b)

She is excited about the possibility of going sledding

c)

She is concerned about getting to school

d)

She is angry about being stuck inside

3.

The first successful flight by the Wright brothers lasted only 12 seconds and covered a distance of 120 feet. Today, modern passenger planes can stay in the air for over 18 hours and travel thousands of miles. The development of aviation technology has transformed how we travel and connect with people around the world.

What is the author's purpose in writing this paragraph?

a)

To entertain readers with a story about planes

b)

To persuade readers to travel by airplane

c)

To inform readers about the progress of flight technology

d)

To explain how to build an airplane

4.

Maya's hands trembled as she approached the microphone. The school auditorium was packed with parents and students waiting to hear her speech. She took a deep breath, remembering all the hours she had spent practicing. As she began to speak, her voice grew stronger with each word.

Which word best describes Maya's character?

a)

Careless

b)

Determined

c)

Lazy

d)

Unfriendly

5.

Did you know that honeybees do a special dance to communicate with other bees? When a worker bee finds a good source of nectar, it returns to the hive and performs a waggle dance. The dance tells other bees both the direction and distance to the flowers. This amazing behavior helps the whole colony collect food efficiently.

What text structure does the author primarily use?

a)

Compare and contrast

b)

Cause and effect

c)

Description

d)

Problem and solution

6.

The old lighthouse stood tall against the stormy sky. Its paint was peeling, and several windows were cracked, but the bright beam still cut through the darkness every night. To passing ships, it was a welcome sight, a guardian angel of the rocky coast.

Which literary device is used in the last sentence?

a)

Alliteration

b)

Metaphor

c)

Onomatopoeia

d)

Simile

7.

The water cycle is Earth's way of recycling water. Water evaporates from oceans, lakes, and rivers, forming clouds in the sky. When the clouds become heavy with moisture, precipitation occurs in the form of rain or snow. This water then flows back into bodies of water, and the cycle continues.

Which sentence best states the main idea?

a)

Clouds are made of water droplets

b)

Rain and snow are types of precipitation

c)

The water cycle continuously moves water around Earth

d)

Oceans contain most of Earth's water

8.

"I can't believe you did that!" Emma whispered to her brother. "Mom specifically told us not to touch her special vase." Jack looked at the broken pieces scattered across the floor. "It was an accident," he mumbled. "Maybe we can fix it before she gets home."

What is the conflict in this passage?

a)

Emma is jealous of her brother

b)

Jack broke their mother's vase

c)

The siblings don't get along

d)

Their mother is strict

9.

Many experts believe children should limit their screen time to two hours per day. Studies show that too much screen time can affect sleep patterns and make it harder to focus in school. Additionally, doctors have found that children who spend more time outdoors and less time on screens tend to be more physically active and maintain healthier weights.

What evidence does the author use to support limiting screen time?

a)

Children prefer playing video games to outdoor activities

b)

Most families own multiple electronic devices

c)

Research about sleep, focus, and physical health

d)

Teachers' opinions about homework completion

10.

I watched as my sister Claire prepared for her first piano recital. From where I sat in the audience, I could see her hands shaking as she approached the piano. "You can do this," I whispered, even though I knew she couldn't hear me. When she finished playing, I was the first one to stand and clap.

From what point of view is this story told?

a)

Third-person omniscient

b)

First-person observer

c)

Third-person limited

d)

Second-person narrator

11.

The California Gold Rush began when James Marshall discovered gold in 1848. This discovery led thousands of people to move west in search of riches. As a result, California's population grew rapidly. Soon, new towns were built, businesses opened, and California became a state in 1850.

What text structure does the author use to organize this information?

a)

Compare and contrast

b)

Problem and solution

c)

Chronological sequence

d)

Description

12.

The autumn wind was a thief, snatching leaves from the trees and scattering them across the yard. It howled through the neighborhood, rattling windows and whistling through cracks, as if searching for a way inside.

What is the meaning of the phrase "the autumn wind was a thief"?

a)

Someone was stealing during autumn

b)

The wind was literally taking things

c)

The author is using personification to describe the wind's action

d)

Thieves are more common during autumn


13.

During photosynthesis, plants use sunlight to make their own food. First, they absorb water through their roots and carbon dioxide through tiny holes in their leaves. Then, using sunlight for energy, they convert these ingredients into sugar and oxygen. The sugar provides food for the plant, while the oxygen is released into the air.

What is the correct sequence of the photosynthesis process?

a)

Sunlight enters leaves, sugar is made, water is absorbed

b)

Water and carbon dioxide are absorbed, sunlight provides energy, sugar and oxygen are produced

c)

Oxygen is released, water is absorbed, sugar is produced

d)

Carbon dioxide enters leaves, oxygen is released, water is used

14.

After losing her third soccer game in a row, Maria wanted to quit the team. But instead of giving up, she asked her coach for extra practice time. Every morning before school, she practiced her kicks and passes. By the end of the season, Maria had become one of the team's strongest players.

What is the theme of this story?

a)

Winning is the most important thing in sports

b)

Morning practice is better than afternoon practice

c)

Persistence and hard work lead to improvement

d)

Soccer is more difficult than other sports

15.

The Great Barrier Reef is home to thousands of marine species. This massive coral reef system provides shelter for fish, turtles, and other sea creatures. It also serves as a nursery where young marine animals can grow safely. However, pollution and rising ocean temperatures are threatening this important ecosystem.

What is the main idea of this passage?

a)

The Great Barrier Reef is the largest coral reef

b)

Ocean pollution is increasing worldwide

c)

The Great Barrier Reef is an essential habitat facing threats

d)

Marine animals need safe places to live

16.

The old treehouse swayed gently in the summer breeze. Emma traced her fingers over the worn wooden planks, remembering how she and her grandfather had built it together five years ago. Though the paint was fading and some boards were weathered, to Emma, it was still the most magical place in her backyard. From her perch among the leaves, she could see the entire neighborhood and imagine she was captain of a ship sailing through green waves.

How does the author develop Emma's character through the setting?

a)

By showing she doesn't like heights

b)

By revealing her connection to the treehouse through memories

c)

By explaining why she wants a new treehouse

d)

By describing her relationship with her neighbors

17.

Unlike most birds, penguins cannot fly. However, their wings have evolved into flippers that make them excellent swimmers. These flippers, combined with their streamlined bodies and waterproof feathers, allow penguins to swim at speeds up to 22 miles per hour underwater. When hunting for fish, they can dive to depths of 500 feet and stay underwater for up to 20 minutes.

Based on details from the passage, what can you infer about penguins?

a)

They prefer to spend time on land rather than in water

b)

They have adapted to become skilled marine hunters

c)

They are trying to learn how to fly like other birds

d)

They are slower swimmers than most fish

18.

The crowd was a rainbow of colors as students filled the gymnasium for the school assembly. Excited whispers bounced off the walls like rubber balls, and the air buzzed with anticipation. Principal Chen's footsteps echoed like thunder as she approached the microphone.

Which sensory details does the author use to create the mood? Choose the best answer.

a)

Only visual details about colors

b)

Only sound details about whispers

c)

Visual and sound details to show excitement

d)

Temperature and smell details

19.

Many animals hibernate during winter because food becomes scarce. When bears hibernate, their heart rate slows down significantly. They don't eat or drink anything during this time, and their body temperature drops. Because of these changes, bears can survive for months without food or water. When spring arrives and temperatures warm up, bears wake up and begin searching for food again.

What is the relationship between the ideas in this passage?

a)

Compare and contrast

b)

Problem and solution

c)

Cause and effect

d)

Sequence of events

20.

Jake stared at his science project in dismay. The volcano he had spent hours building had collapsed just before the science fair. His friend Mia saw his disappointment and rushed over with her extra supplies. "We've got twenty minutes," she said. "Let's rebuild it together." Working quickly, they created an even better volcano than the first one. When Jake won third place, the first person he thanked was Mia.

What is the theme of this story?

a)

Science projects are difficult to make

b)

Winning prizes is the most important goal

c)

Friends help each other in times of need

d)

Time management is crucial for success

21.

The water cycle never stops. Water from lakes and oceans evaporates into the air as water vapor. As it rises, it cools and forms clouds. When the clouds become heavy, precipitation occurs as rain or snow. This water flows into rivers and back to the oceans.

Which step in the water cycle diagram shows water changing from a gas back to a liquid?

a)

Evaporation

b)

Condensation

c)

Precipitation

d)

Collection

22.

Poem 1:
Snowflakes dancing in the air,
Swirling, twirling everywhere.
Winter's blanket soft and white,
Covers everything in sight.

Poem 2:
Silent snow falls in the night,
Each flake a star so pure and bright.
Morning shows a world of white,
A winter wonderland's delight.

How are these poems similar in their description of snow?

a)

Both describe snow as noisy and fast

b)

Both focus on snow's destructive power

c)

Both portray snow as beautiful and transformative

d)

Both emphasize melting snow

23.

Bees are master architects. Inside their hives, they construct perfect hexagonal cells made of wax. These six-sided chambers serve as storage units for honey and pollen, and as nurseries for baby bees. The hexagon shape allows bees to use the least amount of wax while creating the strongest possible structure.

What does the phrase "master architects" tell us about bees?

a)

They build very tall structures

b)

They are skilled and precise builders

c)

They learned building from humans

d)

They only work with wood

24.

Ming clutched her grandmother's jade pendant tightly as she walked onto the stage. The smooth stone felt cool against her palm, just as it had when her grandmother performed Chinese opera years ago. Taking a deep breath, Ming began her violin solo, each note carrying the strength of her family's musical legacy.

How does the jade pendant contribute to the story's meaning?

a)

It shows Ming's interest in jewelry

b)

It represents a cultural and family connection

c)

It distracts Ming from her performance

d)

It proves Ming is wealthy

25.

First, the Wright brothers studied how birds flew, observing their wing movements. Next, they built small models to test their theories about flight. After that, they constructed a wind tunnel to experiment with different wing shapes. Finally, in 1903, they achieved their historic first flight at Kitty Hawk.

Which text structure is used to organize this information?

a)

Compare and contrast

b)

Problem and solution

c)

Chronological sequence

d)

Cause and effect

26.

The city was a sleeping giant at dawn. Streetlights blinked off one by one, like tired eyes closing. The first rays of sunlight crept between skyscrapers, stretching golden fingers across empty streets. Gradually, the giant began to wake as cars honked and people hurried to work.

Which two literary devices does the author use in this passage?

a)

Alliteration and rhyme

b)

Metaphor and personification

c)

Onomatopoeia and hyperbole

d)

Simile and repetition

27.

Seattle receives most of its rainfall between October and March. During summer months, the city experiences a "dry season" with much less precipitation. July and August are typically the driest months, while November and December see the heaviest rainfall.

According to both the text and chart, which statement is true?

a)

Seattle has no rain in summer

b)

Spring has the most rainfall

c)

Winter months are the wettest

d)

Rainfall is the same all year

28.

After three failed attempts at making the basketball team, Marcus didn't want to try out again. His sister found him shooting hoops in the driveway. "Remember what Mom always says," she told him. "The only true failure is giving up." Marcus thought about this, picked up the ball, and started practicing his free throws.

What is the theme of this passage?

a)

Basketball is a difficult sport

b)

Siblings give the best advice

c)

Persistence in facing challenges

d)

Practice makes perfect

29.

Eating breakfast improves school performance in several ways. Studies show that students who eat breakfast score higher on tests than those who skip it. Additionally, breakfast-eaters have better attendance records and fewer trips to the school nurse. Research also indicates that children who eat breakfast have longer attention spans and better behavior in class.

Which evidence best supports the claim that breakfast improves school performance?

a)

Students prefer hot breakfast to cold cereal

b)

Higher test scores and better attendance

c)

Parents save money on breakfast foods

d)

Teachers enjoy eating breakfast too

30.

Sofia's hands flew over the computer keyboard, her eyes bright with excitement. Lines of code filled the screen as she programmed her first video game. When her mother called her for dinner, Sofia hardly heard her. She was too focused on solving the puzzle of why her character wouldn't move left.

What character trait does this passage reveal about Sofia?

a)

She is disobedient

b)

She is determined

c)

She is disorganized

d)

She is distracted

31.

Text 1: The Grand Canyon formed over millions of years as the Colorado River carved through layers of rock. The canyon reveals colorful rock layers that tell Earth's history.

Text 2: Wind and water worked together to shape the red rocks of Monument Valley. Over time, softer rocks eroded, leaving tall stone formations standing alone in the desert.

How are these two natural formations similar?

a)

They were both created by humans

b)

They were formed by weathering over time

c)

They are both located in the same state

d)

They have the same colored rocks

32.

The spaceship creaked and groaned as we entered Mars's atmosphere. My heart pounded as I checked the landing coordinates. Through the viewport, the red planet's surface grew larger. Commander Chen's voice crackled over the radio, "Mission Control confirms landing sequence." I had trained for this moment my whole life.

From what point of view is this story told?

a)

Third-person omniscient

b)

First-person participant

c)

Third-person limited

d)

Second-person narrator

33.

The process of making maple syrup begins in early spring. First, farmers drill small holes in maple trees to collect sap. Then, the clear sap flows into buckets or tubes. Next, the sap is boiled until most of the water evaporates. Finally, the remaining liquid becomes thick, golden maple syrup. It takes about 40 gallons of sap to make one gallon of syrup!

Which statement best describes the sequence of maple syrup production?

a)

Boiling sap, collecting sap, drilling holes, bottling syrup

b)

Drilling holes, collecting sap, boiling sap, making syrup

c)

Collecting sap, making syrup, drilling holes, boiling sap

d)

Making syrup, drilling holes, boiling sap, collecting sap

34.

The music box was a treasure chest of memories. When Abuela opened it, familiar melodies danced through the air like autumn leaves, carrying stories of her childhood in Puerto Rico. Each tune was a golden thread connecting past to present.

What does the phrase "golden thread connecting past to present" mean?

a)

The music box was made of gold

b)

The music helped remember the past

c)

Thread was used to make the music box

d)

The songs were about gold

35.

In a forest ecosystem, energy flows from one organism to another. Plants use sunlight to make their own food. Insects eat plants, small animals eat insects, and larger animals eat smaller ones. When animals die, decomposers break down their remains, returning nutrients to the soil for plants.

Based on the diagram and text, what would happen if all the insects disappeared?

a)

Only the plants would survive

b)

The entire food web would be disrupted

c)

Large animals would eat more plants

d)

Decomposers would work faster

36.

Kai adjusted his hearing aid and smiled as the sounds of the orchestra filled the auditorium. Though he couldn't hear every note perfectly, he could feel the vibrations of the bass through the floor. His hand moved with the rhythm as he conducted his first student concert. The audience watched in amazement as the young conductor led with confidence and joy.

How does the author develop Kai's character?

a)

By showing his frustration with music

b)

By focusing on his physical appearance

c)

By revealing his passion despite challenges

d)

By describing his favorite instruments

37.

Ad 1: "Try New Bubble Blast Gum! It makes the biggest bubbles and keeps its flavor longer than any other gum. Kids love it!"

Ad 2: "Dental experts recommend sugar-free Sweet Smile Gum as part of a healthy oral care routine. Contains xylitol to help prevent cavities."

How do these advertisements differ in their approach?

a)

One appeals to fun while the other focuses on health benefits

b)

Both focus on taste only

c)

Both emphasize dental health

d)

One is for adults while one is for children only

38.

When the community garden was vandalized, everyone felt discouraged. But then Mrs. Rodriguez brought tomato seedlings, Mr. Lee donated new tools, and the Johnson kids made signs. Soon, the whole neighborhood was working together to rebuild. By summer, the garden was more beautiful than ever, filled with vegetables, flowers, and new friendships.

What is the central message of this story?

a)

Gardens are easy to maintain

b)

Communities are stronger together

c)

Vegetables are important to grow

d)

Vandalism is always wrong

39.

Many animals have amazing defense mechanisms. The pufferfish can inflate itself like a balloon when threatened. Skunks spray a terrible-smelling liquid to chase away predators. Walking sticks look exactly like twigs to hide from enemies. Armadillos roll into tight balls, protecting themselves with their hard shells.

What organizational structure does this passage use?

a)

Chronological sequence

b)

Cause and effect

c)

Problem and solution

d)

Examples of a concept

40.

The playground was a battlefield at recess. Teams were chosen, alliances were made, and the jump rope competition began. Lucy's feet moved like lightning, her rope whistling through the air. She was a tornado of motion, unstoppable and fierce.

Which words help create imagery in this passage?

a)

Teams, chosen, began

b)

Playground, recess, jump rope

c)

Battlefield, lightning, tornado

d)

Competition, motion, fierce

41.

The Lost City of the Incas

High in the Andes Mountains of Peru lies a remarkable city that remained hidden from the outside world for centuries. Machu Picchu was built by the Inca people around 1450 CE, using massive stone blocks that fit together so perfectly that not even a knife blade can slip between them. The city includes more than 150 buildings, from houses and temples to agricultural terraces carved into the mountainside.

What makes Machu Picchu even more amazing is its location. Situated nearly 8,000 feet above sea level, the city is surrounded by steep cliffs on three sides. The Urubamba River flows far below through a deep canyon. Without modern machinery, the Inca people somehow managed to transport huge stones up the mountainside. They also created an elaborate system of water channels and fountains that still work today, providing fresh water throughout the city.

For reasons that remain mysterious, the Inca people abandoned Machu Picchu about a century after building it. The Spanish conquistadors, who conquered much of South America in the 1500s, never found this hidden city. It wasn't until 1911 that American explorer Hiram Bingham brought Machu Picchu to the world's attention. Today, archaeologists continue to study this remarkable site, trying to understand how it was built and why it was abandoned.

41.

What is the best evidence from the text that supports the advanced engineering skills of the Inca people?

a)

The city remained hidden from Spanish conquistadors

b)

The site was discovered by Hiram Bingham in 1911

c)

The stones fit perfectly together and the water system still works

d)

The city is located 8,000 feet above sea level

42.

A Different Kind of Music


Maya slumped in her wheelchair backstage, clutching the program for the school talent show. Her name was listed last: "Maya Chen - Piano Performance." Her stomach churned with nervousness, but not for the usual reasons. This would be her first time performing since the accident three months ago.

The accident had left her unable to use her legs, but her hands had remained strong. Still, everything felt different now. Her music teacher, Ms. Rodriguez, had helped her adapt, showing her new ways to use the pedals with special controls attached to her wheelchair. They had practiced for weeks, adjusting the height of her chair and the distance from the piano until everything felt just right.

Through the curtain, Maya could hear Jamal finishing his drum solo. The audience erupted in applause. Her heart began to race as stagehands rolled the piano into position. She thought about backing out, but then remembered the day she first played again after the accident. She had cried, thinking she would never make music the same way. But Ms. Rodriguez had smiled and said, "Different doesn't mean worse. Sometimes it just means finding a new path to the same beautiful destination."

Taking a deep breath, Maya rolled herself onto the stage. The spotlight felt warm on her face as she positioned herself at the piano. Her fingers found the familiar keys, and as she began to play Beethoven's "Moonlight Sonata," she realized something: the music didn't care how she got there. It only mattered that she had found her way back.

42.

What is the main theme of this story?

a)

Talent shows cause anxiety for performers

b)

Friendship helps people overcome obstacles

c)

Adapting to challenges doesn't mean giving up what you love

d)

Piano is the most important instrument in music

43.

Why the Sky Holds Up the Stars
(A Tale from the Plains)

Long ago, when the world was new, the sky lay flat on the ground like a giant blanket. People had to crawl everywhere they went, and birds could only hop about in the spaces between the clouds. The stars were scattered across the land like pebbles, their light dimmed by dust and dirt. It was a time of great discomfort for all living things.

In those days, there lived a young girl named Morning Song who loved to listen to the stories the wind whispered. One evening, as she cleaned the stars she had collected near her home, an ancient turtle named Old Wisdom crawled by. "Why do you polish those fallen stars?" the turtle asked.

"Because even though they're on the ground, they still deserve to shine," Morning Song replied, gently wiping a star with the sleeve of her dress.

Old Wisdom nodded slowly and said, "Did you know that once, the stars lived high above us? But they grew so heavy with the stories they collected that they fell to earth."

Morning Song thought about this and asked, "But if they belong up high, how can we help them return?"

The turtle smiled. "Perhaps if someone were brave enough to sing to the sky itself, it might rise up to hear the song better."

So that night, Morning Song began to sing. She sang about the beauty of the stars, about the dreams of the birds who longed to fly freely, and about all the people who wished to stand tall. Her voice was so pure and her song so true that the sky began to stir.

First, it lifted at one corner, like a blanket being gently raised. Then, as Morning Song's voice grew stronger, the sky rose higher and higher. The stars, hearing their stories in her song, began to twinkle and float upward, taking their places in the lifting sky. The birds spread their wings, finally able to soar, and people stood up straight for the first time, stretching toward the heavens.

When Morning Song finished her song, the sky had risen to where we see it today, held up by nothing but the power of her music and the light of the stars. Old Wisdom nodded with satisfaction and said, "Remember, little one, sometimes the greatest change comes not from strength or power, but from a gentle heart and a willing spirit."

To this day, when you look up at the night sky and see the stars twinkling, some say they are still singing Morning Song's melody, keeping the sky lifted high above the earth.

43.

Which statement best describes how Morning Song's character traits helped solve the story's main problem?

a)

Her physical strength allowed her to push the sky upward

b)

Her kindness and compassion for the stars inspired a solution

c)

Her friendship with Old Wisdom gave her magical powers

d)

Her singing talent was more powerful than anyone else's

44.

The Hidden World of Deep-Sea Creatures

In the darkest depths of the ocean, where sunlight cannot reach, an extraordinary community of creatures thrives in a world most humans will never see. These waters, known as the midnight zone, begin at 3,300 feet below the surface and extend down to the deepest ocean trenches.

Unlike the colorful coral reefs near the surface, the deep ocean appears pitch black to human eyes. However, about 90 percent of deep-sea marine life creates its own light through a process called bioluminescence. The anglerfish, one of the most fascinating deep-sea creatures, uses this ability like a fishing rod. It dangles a glowing lure in front of its mouth to attract curious prey. When smaller fish swim too close to investigate the light, the anglerfish quickly snaps them up with its sharp teeth.

Another remarkable resident of the deep is the giant squid, which can grow as long as a school bus. These elusive creatures have eyes the size of dinner plates to help them spot the faintest movements in the darkness. Despite their massive size, giant squids were photographed alive in their natural habitat for the first time only in 2004. Scientists had to use special cameras that could withstand the enormous pressure of the deep ocean – pressure so intense it could crush a submarine like an empty soda can.

Perhaps the most surprising discovery in these depths is the existence of thriving communities near hydrothermal vents. These underwater hot springs spew mineral-rich water that can reach temperatures of 750°F! While such extreme heat would cook most living things, unique bacteria have evolved to convert these minerals into food. These bacteria form the base of an entire food chain, supporting communities of giant tube worms, blind white crabs, and other creatures that have adapted to life without sunlight.

44.

What is the main idea of this passage?

a)

The ocean is too dark for most animals to survive

b)

Scientists have trouble studying deep-sea creatures

c)

Deep-sea animals have unique adaptations for survival

d)

Bioluminescence is the most important deep-sea adaptation

45.

Inside a Thunderstorm

Have you ever wondered what causes those towering thunderclouds that turn summer afternoons dark as night? The story of a thunderstorm begins with warm air rising from the earth's surface, like an invisible hot air balloon. As this warm air climbs higher into the sky, it carries something crucial with it: water vapor.

The higher the warm air rises, the cooler it becomes. This cooling causes the water vapor to condense into tiny water droplets, forming clouds. Inside these clouds, air currents move up and down like elevators in a skyscraper. The upward-moving air, called updrafts, carries water droplets higher and higher until they freeze into ice crystals. Meanwhile, downward-moving air, or downdrafts, brings rain and hail toward the ground.

But the real drama happens when these ice crystals and water droplets crash into each other inside the cloud. Like children sliding across a carpet in socks, these collisions create static electricity. The top of the cloud usually becomes positively charged, while the bottom becomes negatively charged. When this difference in charge becomes strong enough, a giant spark of electricity jumps between the charges – that's lightning! The lightning heats the air around it so quickly that the air expands explosively, creating the booming thunder we hear.

Some thunderstorms become particularly powerful, developing into supercells that can last for hours. These monster storms can produce tennis ball-sized hail, winds stronger than a hurricane, and even tornadoes. Meteorologists track these dangerous storms using weather radar, which shows them where the heaviest rain and hail are falling. This information helps them warn people to take shelter before the storm arrives.

45.

Based on the passage, which sequence correctly shows how a thunderstorm develops?

a)

Lightning creates thunder → Warm air rises → Clouds form → Rain falls

b)

Warm air rises → Water vapor condenses → Ice crystals form → Lightning and thunder occur

c)

Ice crystals form → Thunder booms → Lightning flashes → Rain begins

d)

Clouds form → Rain falls → Lightning strikes → Warm air rises