1st Semester Spiral Review #1

Front

What happens to the pull of gravity as the distance between two objects increases?

Back

The pull of gravity decreases.

Front

Which type of wave has the longest wavelength and the lowest frequency/energy?

Back

Radio Waves.

Front

Identify a wave that is NOT a mechanical wave.

Back

Light.

Front

Magnetic force and gravitational force are examples of what type of forces?

Back

Non-contact forces.

Front

What is the remnant of the early radiation that filled the universe, evidence of the Big Bang?

Back

Cosmic Microwave Background Radiation.

Front

What is gravity?

Back

A force that attracts two bodies towards each other.

Front

Define mechanical wave.

Back

A wave that requires a medium to travel through.

Front

What is the difference between frequency and wavelength?

Back

Frequency is the number of waves that pass a point in a given time, while wavelength is the distance between successive crests of a wave.

Front

What are electromagnetic waves?

Back

Waves that can travel through a vacuum and do not require a medium.

Front

What is the speed of light in a vacuum?

Back

Approximately 299,792 kilometers per second.