Semester 1 Review

Front

What is the main source of thermal energy on Earth?

Back

The Sun is the main source of thermal energy on Earth.

Front

Gravity is a _____________ force.

Back

Gravity is a non-touching force.

Front

What kind of energy is being used to rake the leaves?

Back

Mechanical energy is being used to rake the leaves.

Front

How do people use sound energy to communicate?

Back

People communicate using sound energy by producing vibrations when talking.

Front

Gravity's force involves ________ and any other object.

Back

Gravity's force involves Earth and any other object.

Front

What is thermal energy?

Back

Thermal energy is the energy that comes from the temperature of matter.

Front

What is mechanical energy?

Back

Mechanical energy is the energy that an object has due to its motion or position.

Front

What is sound energy?

Back

Sound energy is the energy produced by vibrating sound waves.

Front

What is gravity?

Back

Gravity is a force that pulls objects toward each other.

Front

What is the role of the Sun in the solar system?

Back

The Sun provides light and heat, which are essential for life on Earth.