Light Waves and Electromagnetic Spectrum

Alex hears a loud rumble as he watches a space shuttle lift off from the launch pad. What medium does the sound wave travel through to get from the shuttle to Alex’s ears?

• air

• vacuum

• large vibrations

• energy

Tags

NGSS.MS-PS4-2

What is the name given to the lowest point of a wave?

• crest

• trough

• amplitude

• rest position

Kana shines a light onto paper. The light contains both blue and red wavelengths of light. If the paper were blue, what color (or colors) of light would bounce off the paper?

• only red

• only blue

• both red and blue

• neither red nor blue

Tags

NGSS.MS-PS4-2

Electromagnetic energy travels through space in waves. The electromagnetic spectrum includes all electromagnetic waves, arranged according to frequency and wavelength. Which of these is an example of an electromagnetic wave?

• radio wave

• sound wave

• ocean wave

• gravitational pull

Tags

NGSS.MS-PS4-2

The visible part of the electromagnetic spectrum consists of the colors that we see in a rainbow. Different colors correspond to different wavelengths of light. Which color of visible light has the shortest wavelength?

• red

• green

• violet

• yellow

Caleb counts the number of peaks that pass a given point in a certain amount of time on the beach. What property of waves does Caleb measure?

• speed

• frequency

• amplitude

• wavelength

Astronomers use radio waves to learn about the universe. Radio waves travel light-years through space before reaching Earth. Radio waves must be which type of wave?

• sound

• mechanical

• longitudinal

• electromagnetic

Electromagnetic radiation is energy that travels in waves. Some examples of electromagnetic radiation are visible light, radio waves, and x-rays. Which statement is true for all forms of electromagnetic radiation?

• All forms of electromagnetic radiation travel at the same speed in a vacuum.

• All forms of electromagnetic radiation have the same frequency.

• All forms of electromagnetic radiation have the same wavelength.

• All forms of electromagnetic radiation have the same amount of energy in a vacuum.

Tags

NGSS.HS-PS4-1

Which statement best explains why a banana is yellow?

• It emits yellow light.

• It reflects yellow light.

• It absorbs yellow light.

• It transmits yellow light.

Tags

NGSS.MS-PS4-2

Through which medium does a mechanical wave travel most quickly?

• solid

• liquid

• less dense gas

• very dense gas