WorksheetsUnit 7 Review Quiz
Total questions: 99
Worksheet time: 50mins
What percentage of Earth's surface is covered with water?
50%
60%
70%
80%
Where is most of Earth's water found?
Rivers
Lakes
Oceans
Glaciers
What type of water is found in rivers, lakes, and glaciers?
Saltwater
Freshwater
Mineral water
Distilled water
What percentage of the world's freshwater is in Antarctica?
50%
70%
30%
90%
What could happen if the ice in Antarctica melts?
It will cause deserts to form.
It will cause flooding in island nations.
It will make the oceans freeze.
It will create more mountains.
Which cities might experience flooding due to rising sea levels?
Los Angeles and San Francisco
Miami and New York
Tokyo and Beijing
London and Paris
By what year do scientists predict many glaciers will melt?
2050
2100
2200
2000
Why can't we use ocean water for drinking or watering plants?
It's too cold
It's too salty
It's too clean
It's too fresh
Where do we get most of Earth's freshwater?
Oceans
Deserts
Groundwater and glaciers
Mountains
What percentage of Earth's water is freshwater?
10%
25%
4%
50%
Which planet is the only one with liquid water today?
Mars
Earth
Venus
Jupiter
What do scientists believe happened to the water on Mars?
It turned into ice
It evaporated into space
It was absorbed by plants
It became part of the atmosphere
What natural events can cause flooding?
Earthquakes and volcanic eruptions
Tornadoes and droughts
Sandstorms and blizzards
Solar flares and eclipses
Why have people always lived near water?
To build boats
To drink and grow food
To swim and fish
To find treasure
What can help keep people safe during severe storms?
Building homes with wind-resistant roofs
Planting more trees
Using solar panels
Wearing raincoats
Which statement correctly describes the total amount of water on Earth?
About 4% of Earth’s surface is covered with water.
About 97% of Earth’s surface is covered with water.
About 70% of Earth’s surface is covered with water.
About 30% of Earth’s surface is covered with water.
What is weather?
The condition of the outside air at any time or place
The temperature inside a house
The amount of rain in a year
The speed of the wind in a storm
What is the layer of gases surrounding a planet called?
Temperature
Humidity
Atmosphere
Precipitation
What is the measurement of how hot or cold something is?
Humidity
Temperature
Precipitation
Meteorology
What is the amount of water vapor in the air called?
Atmosphere
Precipitation
Humidity
Temperature
What is the study of the atmosphere and weather called?
Precipitation
Meteorology
Temperature
Humidity
What is the general name for water in any form falling from clouds?
Temperature
Atmosphere
Humidity
Precipitation
How can you figure out how far away a thunderstorm is?
By measuring the wind speed
By counting the seconds between lightning and thunder
By checking the temperature
By observing the cloud shapes
If you count 5 seconds between seeing lightning and hearing thunder, how far away is the storm?
About 1 mile
About 5 miles
About 10 miles
About 12 miles
What should you do when you see a flash of lightning to determine the distance of a storm?
Start counting seconds
Start running
Start measuring the rain
Start taking pictures
What does it mean if you see lightning but never hear the thunder?
The storm is very close
The storm is more than 12 miles away
The storm is exactly 5 miles away
The storm is less than 1 mile away
What is a great way to learn about weather patterns?
Reading books
Looking at the sky and making observations
Watching TV
Playing video games
Besides looking at the sky, what else can we use to measure changes in the weather?
Tools
Music
Food
Cars
What is a carbon footprint?
The amount of water used daily
The amount of carbon dioxide and methane gases released into the air
The number of trees in a forest
The size of a person's shoe
How many tons of carbon gases do people in the U.S. release each year on average?
4 tons
10 tons
16 tons
20 tons
What is the target amount of carbon gases per person by the year 2050 to help stop climate change?
1 ton
2 tons
3 tons
4 tons
Which of the following activities does NOT contribute to a carbon footprint?
Driving cars
Heating homes
Planting trees
Making products
What is the name of the plan made by world leaders in 2015 to help stop the Earth from getting too hot?
Kyoto Protocol
Paris Agreement
Earth Summit
Climate Pact
Which of the following is a way to help fight climate change?
Use more plastic
Use clean energy like wind or solar power
Cut down more trees
Drive cars more often
What do the 3 R's stand for in helping the environment?
Reduce, Reuse, Recycle
Read, Write, Repeat
Run, Rest, Relax
Rebuild, Renew, Replant
Why is it important to plant trees to help the environment?
They provide shade
They take in carbon dioxide and give out oxygen
They make the air warmer
They use up more water
What are some power plants learning to do with carbon dioxide?
Release it into the air
Capture it before it goes into the air
Burn it for energy
Use it to make plastic
Where do power plants store carbon dioxide to prevent problems?
In the ocean
In the atmosphere
Underground
In trees
What is one way scientists are using carbon dioxide?
To make ice cream
To grow algae for biofuels
To create fireworks
To build houses
What can you do to help stop climate change?
Ignore it
Work together to reduce your carbon footprint
Use more plastic
Drive more cars
What can models be used to explain according to Lesson 24 Objectives?
How plants grow
How seismic waves move and change the Earth
How animals communicate
How the weather changes
What is one way to help people stay safe from natural disasters mentioned in Lesson 24 Objectives?
Use umbrellas during rain
Compare ways to help people stay safe from earthquakes and floods
Wear sunscreen
Drink plenty of water
What is an objective related to science investigations in Lesson 24?
Do science investigations step by step to learn something new
Write a story about science
Draw pictures of science experiments
Sing a song about science
How can students share their discoveries during a science investigation according to Lesson 24 Objectives?
By writing a poem
By clearly and completely sharing what they discovered
By drawing a picture
By making a video
What type of natural disaster does this sound like?
Earthquake
Hurricane
Flood
Tornado
What was the magnitude of the earthquake near Julian, California on April 14, 2025?
4.5
5.2
6.0
3.8
What did the adult elephants do when the ground started shaking?
Ran away
Made a protective circle
Started trumpeting loudly
Hid behind trees
Which two young calves were protected by the adult elephants?
Zuli and Mkhaya
Ndula and Umngani
Khosi and Zuli
Mkhaya and Ndula
How did Khosi calm Mkhaya during the earthquake?
By trumpeting
By touching him with her trunk
By giving him food
By leading him away
What causes earthquakes to happen?
Heavy rain
Parts of the Earth's crust moving suddenly
Volcano eruptions
Strong winds
What is the name of the place where the earthquake starts underground?
Epicenter
Fault
Focus
Seismic zone
Which type of seismic wave is the fastest and arrives first?
Surface Waves (L waves)
Secondary Waves (S waves)
Primary Waves (P waves)
Ocean Waves
What is the epicenter of an earthquake?
The place where the earthquake starts underground
The spot right above the focus on Earth's surface
A type of seismic wave
A famous fault line
Which type of seismic wave causes the most damage?
Primary Waves (P waves)
Secondary Waves (S waves)
Surface Waves (L waves)
Tidal Waves
What are the smaller earthquakes called that happen after a big earthquake?
Aftershocks
Tremors
Quakes
Ripples
Who studies earthquakes?
Seismologists
Geologists
Meteorologists
Biologists
What tool is used to record the shaking of an earthquake?
Seismograph
Thermometer
Barometer
Anemometer
What scale is used to measure the strength of an earthquake?
Richter scale
Celsius scale
Kelvin scale
Decibel scale
What is the range of the Richter scale?
1 to 10
0 to 5
1 to 5
0 to 10
What do engineers add to the bottom of buildings to help reduce shaking during an earthquake?
Strong steel pieces
Shock absorbers and padding
Extra windows
Heavy bricks
Which city is mentioned as having buildings designed to withstand earthquakes?
New York
San Francisco
Los Angeles
Chicago
What shape are the strong steel pieces inside the Transamerica Pyramid?
Circles
Squares
Triangles
Rectangles
Why is it important to save energy and protect natural resources?
To increase pollution
To waste resources
To protect the environment
To make more trash
What can people do to stay safe during natural events like earthquakes or floods?
Ignore safety warnings
Stay outside in open areas
Stay informed and prepared
Panic and run
What is one way to help protect people from natural disasters?
Build houses on weak foundations
Create emergency plans
Ignore weather forecasts
Leave windows open during storms
How can we measure changes in the weather?
By guessing
By using weather instruments
By looking at the sky
By asking friends
What can we do to understand climate patterns?
Ignore data
Look at data
Make random guesses
Watch TV shows
Where can water be found on Earth?
Only in rivers
Only in oceans
In rivers, lakes, and oceans
Only in lakes
What happens when seismic waves move through Earth?
Nothing changes
The Earth becomes flat
Models can show the effects
The Earth stops moving
What is an important skill during science investigations?
Making guesses
Careful observations
Ignoring results
Rushing through experiments
What is conservation?
Protecting things in nature
Using more resources
Ignoring endangered animals
Wasting water
Which of the following is an example of conservation?
Leaving lights on all day
Turning off lights to save electricity
Using more water than needed
Throwing away recyclable items
Why is it important to help endangered animals like sea turtles?
To make them pets
To keep Earth clean and safe
To have more zoos
To increase pollution
Why is it important to switch to cleaner energy?
It makes electricity more expensive.
It helps protect the planet by reducing pollution.
It uses more fossil fuels.
It causes more climate change.
Which of the following is a natural resource?
Plastic
Water
Metal
Concrete
What is one way to protect soil?
Use more chemicals on farms.
Grow cover crops like soybeans.
Use plastic fertilizers.
Burn fossil fuels.
What can you do to help conserve the planet?
Leave lights on all the time.
Use more water than needed.
Recycle and turn off lights.
Ignore nature.
What are the 3 R's mentioned in the text?
Reduce, Reuse, Recycle
Read, Write, Learn
Run, Rest, Relax
Red, Blue, Green
What is conservation about?
Protecting natural resources
Building new cities
Creating new technology
Traveling to space
Which of the following is a natural resource?
Plastic
Water
Steel
Concrete
What does "reduce" mean in the context of the 3 R's?
To use more things and create more trash
To use fewer things and make less trash
To recycle everything
To buy new items frequently
Which of the following is a way to reduce water usage while brushing your teeth?
Let the water run continuously
Use a cup to rinse
Turn off the water while brushing
Brush your teeth in the shower
How much water can you save in a year by not running water while brushing your teeth?
100 gallons
500 gallons
Over 1,000 gallons
10,000 gallons
What is a suggested alternative to using plastic bags for your lunch?
Paper bag
Reusable bag
Plastic wrap
Aluminum foil
If every person in the U.S. saved 1,000 gallons of water a year, how much would be saved in total?
100 million gallons
1 billion gallons
333 billion gallons
500 billion gallons
What does "recycle" mean?
Throwing away old stuff
Taking old stuff and turning it into something new
Burning old stuff
Burying old stuff
Which of the following can be recycled?
Plastic bottles
Food waste
Rocks
Sand
Why is it important to recycle?
It makes more trash
It helps animals and reduces pollution
It costs more money
It uses more energy
What does recycling save?
Energy, trees, money, and wildlife
Only money
Only trees
Only energy
What is one way to conserve Earth's resources mentioned in the text?
Leave lights on all the time
Use things only once
Turn off lights and water
Throw away everything
What should you talk to your family and friends about to help the planet?
The 3 R's
Buying new things
Traveling more
Using more water
What does the text suggest you do with items to help the environment?
Use them once and throw away
Recycle whenever you can
Burn them
Hide them
What is the term for water that moves across Earth into rivers and lakes?
Runoff
Precipitation
Groundwater
Evaporation
What is the term for water that returns to Earth as rain, sleet, snow, or hail?
Runoff
Precipitation
Groundwater
Condensation
What is the term for lakes, rivers, or streams found below Earth's surface?
Runoff
Precipitation
Groundwater
Surface water
How is life impacted by the availability of water?
It has no impact on life.
It affects food supplies and daily activities.
It only affects animals.
It only affects plants.
Choose whether the statement is true or false: Lack of water resources is common in all countries.
True
False
Climate change can cause droughts in some parts of the world, which affects what?
Food supplies
Clothing styles
Music preferences
Sports activities
Girls in parts of the world must walk several miles to collect what for their families every day?
Firewood
Water
Food
Books
