Question 1

Some students used a globe to model the rotation of Earth. They shaded in Texas on the globe, as shown. They rotated the globe and observed that Texas was in exactly the same place after each rotation.  The students could rotate the globe quickly or slowly. If the globe could rotate only at the rate that Earth actually rotates, about how long would each complete rotation take?

Accepted Answer

24 hours

Answer

30 days

Answer

365 days

Answer

60 minutes

Question 2

A student observes ice forming on the edge of a school building.  At what temperature did the water outside the school building most likely begin to change to ice?

Accepted Answer

$0^oC$

Answer

$25^oC$

Answer

$32^oC$

Answer

$100^oC$

Question 3

The caterpillars of monarch butterflies eat milkweed leaves. Milkweed leaves contain sap that is toxic to many animals but not to monarch butterfly caterpillars. This sap makes the monarch butterfly caterpillars toxic to predators and protects them from being eaten.  
Which of these is an inherited trait of monarch butterfly caterpillars?

Accepted Answer

The ability of the caterpillars to eat toxic leaves without being harmed

Answer

The size of the milkweed leaves that the caterpillars eat

Answer

The number of milkweed leaves the caterpillars eat each day

Answer

The number of leaves on the milkweed plants that the caterpillars visit eachsummer

Question 4

Animals and plants use substances that cycle through the environment. Which substance is needed by animals to survive and is released into the environment by plants?

Accepted Answer

oxygen

Question 5

The food web below is made up of organisms that live in a forest.

Which change would most likely occur if all the producers in this ecosystem were removed?

Accepted Answer

All the animals would either die or move away.

Answer

All the animal populations would increase.

Answer

The mice would become the new producers.

Answer

The number of mice would increase.

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