4th Grade 'Topic 8 Quick Check Review

In Florida the fur seen on a red fox stays the same color all year. However, in the Arctic, the fur of an arctic fox changes to white in the winter. Which statement best explains why an arctic fox’s fur changes but the Florida red fox’s fur stays the same?

• Arctic foxes need to change color so they can migrate.

• Arctic foxes need to change color so they can hibernate.

• Arctic foxes need to change color to stay warm.

• Arctic foxes need to change color to better camouflage themselves in their environment.

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Why does the tree in Florida have so many more leaves than the tree in Montana?

• The tree in Florida did not have strong winds to knock the leaves down.

• The tree in Florida did not have to shed its leaves to protect it from the cold winter.

• The tree in Florida did not have insects and animals eating the tree.

• The tree in Florida is closer to sea level and has less gravity pulling the leaves.

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Which change is least likely to affect the migration patterns of a herd of deer?

• a decrease in available fresh water

• an increase in seasonal rainfall

• a decrease in the abundance of plants they eat

• an increase in predators in the area

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Review the food chain below.

Berry → Mouse → Snake.

A mouse is storing the energy from a berry in its body.

What will happen to the energy from the berry if the mouse is eaten by a snake?

• The energy will return to the berry.

• The energy will be completely lost.

• The energy will be absorbed by the snake.

• The energy will be transferred to another mouse.

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Which of the following is true about animals?

• all animals are carnivores

• animals are consumers

• animals are producers

• animals are decomposers

What is one difference between a consumer and a producer?

• A consumer is larger in size than a producer.

• A consumer cannot make its own food like a producer.

• A consumer passes its energy on and a producer does not.

• A consumer is at the beginning of the food chain and a producer is at the end.

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The food chain below shows how energy is transferred between organisms in the African savannah. What would happen to the zebras and lions if most of the grass in the ecosystem were killed by a long drought?

• The lion population would not be affected. Lions do not eat grass.

• the lion population would not be affected. The lions can also get the energy they need from eating animals.

• The zebra population would decrease. Zebras depend on the grass for energy they need to survive.

• The zebra population would increase. Zebras would not have to compete with grass for resources.

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Rabbits are consumers. Which sentence tells how a rabbit gets energy from the Sun?

• Energy from the Sun is passed to rabbits when they drink water.

• Energy from the Sun is passed to rabbits when they eat green plants.

• Energy from the Sun is passed to rabbits when they eat other animals.

• Energy from the Sun is passed to rabbits when they eat insects.

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Which type of organism uses the Sun’s energy to make its own food?

• a snake

• a mouse

• a plant

• a mushroom

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A desert tortoise, cactus, and coyote can all be found in a desert environment. Which of the following correctly traces the flow of energy from the sun through this desert food chain?

• Sun → Coyote → Desert Tortoise → Cactus

• Desert Tortoise → Cactus → Coyote → Sun

• Sun → Cactus → Desert Tortoise → Coyote

• Coyote → Desert Tortoise → Cactus → Sun

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