CAST Science Practice Test

Front

Predict the changes in the sea urchin population as the kelp population increases.

Back

Sea urchin population decreases

Front

Use the graphs and the partial food web to predict the changes in the kelp population as the kelp population INCREASES. What will happen to the kelp population?

Back

Kelp population decreases

Front

Select a moon location in the model that supports the explanation that the New Moon phase explains why the disk becomes a ring.

Back

2

Front

Why don't solar eclipses happen every month despite a new moon occurring?

Back

The model should show that the plane of the Moon's orbit around the Earth is inclined relative to the plane of Earth's orbit around the Sun.

Front

Leah combined Fe and CuSO₄ and measured the masses before and after a reaction. What is the total mass of the reactants?

Back

96 grams

Front

After the predator is introduced, which fish has a BETTER chance of surviving?

Back

dark colored fish

Front

Why would the dark colored fish have a better chance of surviving after the new predator is introduced?

Back

The predator cannot see them as well as the fish of the light color.

Front

Choose a claim that best agrees with the data about gravitational force between two objects.

Back

Both mass and distance are variables that affect the gravitational force between two objects.

Front

What point in the graph represents rapid growth?

Back

A

Front

What point in the graph represents the paramecium reaching carrying capacity?

Back

B