CAST Test Prep

Front

What is soil erosion?

Back

Soil erosion is the process by which soil is removed from the Earth's surface by wind, water, or human activity.

Front

What role do plants play in preventing soil erosion?

Back

Plants help prevent soil erosion by holding the soil in place with their roots and reducing the impact of rain on the soil surface.

Front

What do plants need to perform photosynthesis?

Back

Plants need sunlight, carbon dioxide, and water to perform photosynthesis.

Front

What is gravity?

Back

Gravity is a force that pulls objects toward each other, and on Earth, it pulls everything towards the center of the Earth.

Front

What is a food web?

Back

A food web is a system of interconnected food chains that shows how energy and nutrients flow through an ecosystem.

Front

What is a producer in a food web?

Back

A producer is an organism, like a plant, that can make its own food through photosynthesis.

Front

What is a consumer in a food web?

Back

A consumer is an organism that eats other organisms for energy, such as animals.

Front

What is a decomposer?

Back

A decomposer is an organism, like fungi or bacteria, that breaks down dead organic material and recycles nutrients back into the ecosystem.

Front

How can you tell if a test prototype is successful?

Back

A test prototype is successful if it meets the criteria for success set before the test.

Front

What is the importance of carbon dioxide for plants?

Back

Carbon dioxide is essential for plants as it is used in photosynthesis to produce oxygen and glucose.