Amplify Science - U2Ch3 Test - 4th Grade

Front

What is a predator?

Back

A predator is an animal that hunts and eats other animals for food.

Front

Give an example of a predator.

Back

Shark is an example of a predator.

Front

What is the function of light receptors?

Back

Light receptors help animals receive and absorb light from their environment.

Front

How many variables should scientists change at a time during an investigation?

Back

Scientists should change one variable at a time during an investigation.

Front

What is a model in science?

Back

A model is used to understand something that is hard to observe.

Front

What does it mean to reflect light?

Back

To reflect light means to cause light to bounce off a material.

Front

What is an example of a light receptor?

Back

The eyes of animals contain light receptors.

Front

Why do scientists use models?

Back

Scientists use models to simplify complex systems and make them easier to study.

Front

What is a variable in a scientific investigation?

Back

A variable is a factor that can change in an experiment.

Front

What is the purpose of an investigation in science?

Back

The purpose of an investigation is to explore and answer scientific questions.