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Worksheets"Post Test" LEAP 2025 Science (Blue Book)
Total questions: 44
Worksheet time: 22mins
POST TEST (p. 86 - 88)
Earthquakes or volcanic eruptions cause tsunamis. The wavelengths of tsunamis are longer than those of regular waves. A wave in a tsunami can be up to 120 miles long. Tsunamis can travel long distances before reaching the shore. Before a tsunami hits, the water near land draws backward. This event is called a drawback. Entire bays can nearly empty of water before a tsunami strikes.
The largest recorded tsunami wave struck Alaska in 1958. The height was 1720 feet tall. The waves destroyed land and vegetation. What was likely future impact on the land after the tsunami?
Alaska had less land for the farming and forestry industry.
There was likely more future flooding due to a lack of vegetation.
There was less wildlife to eat vegetation.
The wave caused increased physical weathering on rocks, changing the landscape.
POST TEST (p. 87 - 88)
In China, you can find the world's deepest sinkhole. The Heavenly Pit, as it's called, is 1,677 to 2,172 ft deep. Sinkholes form when the rock below the ground collapses. The ground underneath the soil weathers and transforms because of changes in the rock layers.
Megan visits the Heavenly Pit sinkhole. She is told the rock around the sinkhole is limestone. The limestone did not allow the excess soil to remain on top of it, causing the sinkhole to form. What type of weathering is this an example of?
physical weathering
manmade weathering
erosion
chemical weathering
POST TEST (p. 86 - 87)
Earthquakes or volcanic eruptions cause tsunamis. The wavelengths of tsunamis are longer than those of regular waves. A wave in a tsunami can be up to 120 miles long. Tsunamis can travel long distances before reaching the shore. Before a tsunami hits, the water near land draws backward. This event is called a drawback. Entire bays can nearly empty of water before a tsunami strikes.
After a minor tsunami, a local beach lost half a mile of sandy coastline. Which is the most likely explanation for what happened to the sand?
The sand dissolved in the water.
The sand was pulled into the ocean through a drawback.
The sand became salt.
The sand was deposited in other water systems.
POST TEST (p. 86 - 87)
Earthquakes or volcanic eruptions cause tsunamis. The wavelengths of tsunamis are longer than those of regular waves. A wave in a tsunami can be up to 120 miles long. Tsunamis can travel long distances before reaching the shore. Before a tsunami hits, the water near land draws backward. This event is called a drawback. Entire bays can nearly empty of water before a tsunami strikes.
After a minor tsunami, a local beach lost half a mile of sandy coastline. Which another likely explanation for what happened to the sand?
The sand dissolved in the water.
The sand became salt.
The sand was washed further inland by a tsunami.
The sand was deposited in other water systems.
POST TEST
"Nutria" (Coypu)
Nutria became part of Louisiana's ecosystem during the 1930's. They were brought in to the state for their furs. Nutria escaped the fur farms and created habitats in marshland. Their sharp teeth chewed through all types of vegetation. They also chewed through irrigation systems and the wood on houses.
A local nutria population has become a problem for a marshland. The park service wants to solve the erosion problem caused by the nutria. Which would not be a good solution to decrease the population.
trapping
shooting
poisoning the entire water of marshland
POST TEST (p. 89 - 90)
The venus flytrap is an amazing plant. It developed unique external structures to capture prey. The plant mostly gets its nutrients from the gases in the air. However, the plant lures and traps insects. The "mouths" of the flytrap have soft hairs called cilia outside and inside. When a fly tickles the cilia, the leaves snap shut. Inside the leaf, digestive juices break down the soft parts of the fly. The hard parts of the fly are ejected from the leaf days later.
Marley tries to feed her venus flytrap a dead fly. The leaves do not close over the fly. What can Marley do to make the flytrap's leaves close?
Spray water on the flytrap leaves.
Add another fly to the leaves.
Tickle the cilia to make the leaves close.
Put the plant out in the sun.
POST TEST (p. 89 - 92)
The venus flytrap is an amazing plant. It developed unique external structures to capture prey. The plant mostly gets its nutrients from the gases in the air. However, the plant lures and traps insects. The "mouths" of the flytrap have soft hairs called cilia outside and inside. When a fly tickles the cilia, the leaves snap shut. Inside the leaf, digestive juices break down the soft parts of the fly. The hard parts of the fly are ejected from the leaf days later.
Venus flytraps usually grow in damp, humid climates. A new species is created in which they can withstand hotter, drier conditions. What type of internal-external structures would NOT the plant develop?
brighter colors
deeper roots
larger cilia
water storage system
POST TEST (p. 89 - 90)
Homing pigeons are able to find their way home across long distances because the iron in their beaks acts like a compass. The longest flight completed by a homing pigeon was 1,1000 miles. Homing pigeons were used to carry messages. A small tube was attached to the birds' leg where the message was placed. The pigeon would deliver its message to its destination than fly back "home".
Kieran sends a homing pigeon from his house in New Orleans to Baton Rouge. The pigeon gets lost on its way back. What may have happened to cause the pigeon to get lost?
the bird lost his map
the bird lost his compass
the bird had beak damage, removal of home site, or a disruption of magnetic waves
the bird hit his head and suffered memory loss
POST TEST (p. 90 - 91)
"Thorny Devil"
In the hot desert, there is not much water for the thorny devil lizard. The lizard had to adapt to its environment. Its skin absorbs water. The scales on its body collect the water from the air and channel it to the lizard's mouth. The lizard drinks the water, allowing it to survive.
Anya is a wildlife specialist. She finds a thorny devil near a swamp. Select how the thorny devil would NOT most likely adapt to the wet conditions.
webbed feet
skin like a snake or frog
feathers or fur
POST TEST (p. 90 - 91)
"Source 4: Pollination"
Neal owns a sunflower farm. Insects keep eating his sprouts, so he sprays a pesticide. Later, Neal realizes the chemicals killed the bees and his flowers are not pollinated. Neal wants to ensure his flowers grow again.
PART A:
What would be a logical first step for Neal to recover his sunflowers?
Wash away the pesticides on his sunflowers.
Plant an adjacent field of flowers which attract pollinators.
Cut down his current crop and replant.
Build hives around the sunflower field.
POST TEST (p. 90 - 91)
"Source 4: Pollination"
Neal owns a sunflower farm. Insects keep eating his sprouts, so he sprays a pesticide. Later, Neal realizes the chemicals killed the bees and his flowers are not pollinated. Neal wants to ensure his flowers grow again.
PART B:
Based on the solution for Part A, what would be a long-term impact?
The sunflowers would cross-pollinate with others flowers.
The new crop of sunflowers would have no chemicals.
The beehives would add honey to his farm.
The new flower field will poison the bees.
POST TEST (p. 92 - 94)
As you learned, sound travels in waves. However, there is an obstacle which prevented planes and other vehicles breaking thorugh the sound barrier. The sound barrier is 747 miles per hour. Many people tried to break the sound barrier. A pilot named Chuch Yeager broke the sound barrier in 1947. He flew a rocket-powered aircraft called the Bell X-1. He reached the speed of 807.2 miles per hour. He achieved what is called supersonic speed.
Ruth wants to make a model of the waves when Chuck Yeager broke the sound barrier. Which of the following wave models BEST represents breaking the sound barrier?
POST TEST (p. 93, 94, 95)
"Solar Power Diagram"
Lauren has solar panels installed on her house to save money on energy costs. Explain how cloudy and rainy days may affect the cost of electricity in the house.
There will be no affect on the electricity produced.
The solar panels electricity production will increase.
The solar panels will produce electricity but at a reduced amount.
The solar panels will be useless.
POST TEST (p. 93, 94, 95)
"Solar Power Diagram"
Lauren's town experiences a severe storm which knocks off the power. Lauren's solar panels still have stored energy. What is MOST LIKELY to happen at her house during the power outage?
Lauren's house will still have the stored power to use...possible for an hour.
Lauren's house will not have any power to use.
Lauren's house will be sut down regardless for safety reasons.
Lauren's power circuits will stop working.
POST TEST (p. 93 - 95)
"Roasting Marshmallows"
Dylan demonstrates how to roast marshmallows. He places the marshmallows on a metal stick. Dylan holds the marshmallow over the flames. Which sentence BEST explains how the marshmallow is roasted?
The flames radiates heat, which roasts the marshmallows.
The marshmallow is flammable and easily burns.
The metal stick conducts heat, which roasts the marshmallow.
The warm air from the fire meets the cool air of the metal rod.
POST TEST (p. 94 - 95)
"Thermal Temperature"
Thermal Imaging reads the heat emitted by living and nonliving things. There are special cameras used to take thermal images. The cameras "see" the infared waves our eyes cannot see. With the camera, we can look at the waves and thermal energy.
Daniel gets a thermal imaging camera. He shines the camera on a piece of ice, then on his cat. Choose how the two objects will show up differently on the camera.
The cat will show up less bright than the ice.
The ice will show up brighter than the cat.
They will show up equally as bright.
The cat will show up brighter (in red, yellow, and orange colors) than the ice (more likely blue).
POST TEST (p. 96)
As a geologist, you notice that several cracks have appeared in the ground around a volcano. Your friend tells you about several small earthquakes happening around the volcano. What event is MOST LIKELY to happen?
a major earthquake
no events will happen
a volcanic eruption
a major earthquake and eruption
POST TEST (p. 97 - 98)
"Yellowstone Super Volcano"
Underneath the surface of Yellowstone National Park, a giant volcano exists. There are two large chambers of lava underneath its surface. The magma chambers have existed for nearly 8 million years. The calderas are 35 to 45 miles long. An eruption would spread ash clouds for thousands of miles and cause severe loss of life.
A geologist reads the map above. He wants to create a report on possible causes for a super eruption. What type of events could cause the eruption?
nothing could cause an eruption
a glaicer floating on top
a giant flood
build up of magma pressure or an earthquake
POST TEST (p. 97 - 98)
"Yellowstone Super Volcano"
Underneath the surface of Yellowstone National Park, a giant volcano exists. There are two large chambers of lava underneath its surface. The magma chambers have existed for nearly 8 million years. The calderas are 35 to 45 miles long. An eruption would spread ash clouds for thousands of miles and cause severe loss of life.
Based on the image of the Yellowstone Super Volcano, what is the relationship between magma and geysers?
magma causes the geyser to spray
magma heats the water spraying from the geyser
there is no relationship
magma pushes up the water
POST TEST (p. 98)
Which of these materials heats most quickly on a hot day in the sun?
concrete
cement
liquid water
soil
POST TEST (p. 98)
The footprints of a brontosaurus dinosaur were found in several places buried underneath the soil near lakes. What can they tell us about the brontosaurus?
what it ate
how big it was
how it died
where it traveled
POST TEST (p. 98)
The footprints of a brontosaurus dinosaur were found in several places buried underneath the soil near lakes. What else can they tell us about the brontosaurus?
what it ate
how big it was
how long it lived
how it died
POST TEST (p. 99)
Windmills can turn wind energy into mechanical energy that can be used for pumping water, grinding grain, or producing electricity. Which one of the following statements in NOT true concerning the use of wind as a source of energy?
Wind energy is a renewable resource.
Wind power does not cause air pollution.
Wind energy is not always a reliable source of energy because wind patterns change.
Using wind energy as a source of energy causes more air pollution.
POST TEST (p. 99)
Ross was riding his bike down a hill, and he pumps his brake upbruptly. Describe the motion immediately after braking.
He is thrown backward off the bike.
He is thrown sideway off the bike.
He is thrown forward over the handlebars.
He is thrown upward into the air.
POST TEST (p. 99 - 101)
This map shows how islands are formed from volcanoes. The magma rises and breaks the surface fo the ocean. Which phrase BEST explains what happens when the magma meets the ocean?
The ocean instantly turns the magma into a solid.
The magma only cools down slightly in the ocean.
The magma cools instantly and turns the ocean to steam.
The ocean winds cause the magma to harden in the ocean.
POST TEST (p. 100 - 101)
The Himalayas took millions of years to form. Based on the map, what MOST LIKELY happened to create the mountains?
Volcanoes erupted in Asia to form the Himalayas.
A river carved out the area on either side of the mountains.
Multiple earthquakes caused the earth to buckle upwards.
The plates on either side of the mountain separated and caused a valley.
POST TEST (p. 100 - 101)
The coast of the Gulf of Mexico used to be much smaller millions of years ago. What is a possible factor which led to the growth of the coastline?
volcanic ash deposits
volcanoes erupting under the sea
deposits of soil from the Mississippi River
POST TEST (p. 100 - 101)
The coast of the Gulf of Mexico used to be much smaller millions of years ago. Choose another possible factor which led to the growth of the coastline?
erosion sediments from the Appalachian Mountains
volcanoes erupting under the sea
movement of earth's plates
POST TEST (p. 101)
There are many volcanoes underneath the ocean which produce magma. Explain why magma can exist underneath the ocean.
they don't exist
because the magma is stored beneath the ocean floor in the Erath's crust
because magma grows on top of the ocean floor and waits to erupt
magma drops from the sky and sink into the ocean
POST TEST (p. 102)
After the Himilayas were intially formed, many factors contributed to giving them their current shape. Which below is NOT like part of forming them?
weathering
erosion
glacial melting
tsunamis
POST TEST (p. 102 - 103)
"Tacoma Narrows Bridge"
The Tacoma Narrows Bridge was built in 1940. The bridge was suspended on bulky cables. Many cars traveled over the bridge. The bridge collapsed four months later. Before it collapsed, the bridge was twisting in the air. The wind was blowing it and it twisted. The twisting caused powerful vibrations up and down the bridge.
Explain what MOST LIKELY caused the bridge to collapse.
The vibrations made the aphalt stronger but the cables weaker.
The wind blew and twisted the bridge until it weakened. Also, the bridge resonated with the wind and sound vibrations causing the structure to fail.
The wind did not affect the bridge at all.
POST TEST (p. 103 - 104)
"Whale Songs"
Humpback whales use songs to communicate. Humans can only hear parts of the songs because of their high frequency. The songs are mainly used to find mates. The mystery of whether the song is used for echolocation still exists.
Bridget is a marine biologist. She finds a pod of whales living in a bay area. She notices they all sing similar songs. Which phrase BEST explains why the whales have similar songs?
They wanted to sound like dolphins in the area.
They learned the song by listening to others.
They have limited sound capabilties.
POST TEST (p. 103 - 104)
Fireflies use their bodies, instead of sound, to communicate. A bright blinking light shines in their abdomens. The light is a chemical reaction. The process is called bioluminescence. The light is mainly used to find a mate during the summer. The flashes are signals to tell other fireflies about themselves.
What type of adaptation is this?
Structural (physical)
Behavior
Physiological
POST TEST (p. 103 - 104)
Fireflies use their bodies, instead of sound, to communicate. A bright blinking light shines in their abdomens. The light is a chemical reaction. The process is called bioluminescence. The light is mainly used to find a mate during the summer. The flashes are signals to tell other fireflies about themselves.
There is a decline in the number of females in the firefly population. It means more competition for a mate. How could this change the signals the male fireflies produce?
the signals will remain the same
the signals will be brighter
the singals will be weaker
POST TEST (p. 105)
A paleotologist discovers a new dig site near a forest. Based on the image below, which fossil is the oldest found at the site?
4
3
2
1
POST TEST (p. 105)
Jesse sees his local lake is polluted. What is NOT a problem caused by pollution?
poisoned fish
healthier fish with clean drinking water
algae growth
unbalanced ecosystem
POST TEST (p. 105)
Maia pushes a toy car of the steps. What type of energy is the car displaying as it rolls down the steps?
inert
heat
kinetic (mechanical)
potential
POST TEST (p. 106)
You need to collect frozen and dry fossils. Select where you MOST LIKELY find them.
mountains / glaciers
glaciers / lakes
desert / mountains
deserts / glaciers
POST TEST (p. 106)
Jason wants to model the predator-prey cycle. Which animals BEST model the cycle?
bee-honey
flower-sun
deer-grass
eagle-fish
POST TEST (p. 106)
A hurricane damages Louisiana's barrier islands. What are some problems which could result?
no problems would result...the area will stay as is
the coastline will build up land
the coastline will begin to erode away..the barrier is gone
POST TEST (p. 106)
An electric car charges its battery. Once it's charged, the car cranks and moves. What type of energy transfer took place?
electric to motion
heat to motion
electric to hear
kinetic to potential
POST TEST (p. 106)
The small city of Crystal Springs is built next to a river. Why do city planners maintain the edges of waterways with grass and landscaping?
to increase the water flow
to increase erosion
to decrease water flow
to decrease erosion
POST TEST (p. 107)
Lucy plugs a hair dryer into an electric circuit and turns it on. Which circuit element is teh hair dryer?
a closed switch
an open switch
a resistor
a power source
POST TEST (p. 107)
A person knocks on a wooden door. When do the sound waves she has produced travel the SLOWEST?
as they move through wood
as they move through the air
as they enter the ear
all sound waves travel at the same speed
