Light and Sound

Light and Sound

Assessment

Flashcard

Science

8th Grade

Practice Problem

Hard

Created by

Wayground Content

FREE Resource

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15 questions

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1.

FLASHCARD QUESTION

Front

What is the primary reason communication in space occurs using radio waves?

Back

Sound needs a medium (like air) to be carried, and space has no medium (it's a vacuum).

2.

FLASHCARD QUESTION

Front

How is the wavelength of a sound wave measured?

Back

From peak to peak or trough to trough.

3.

FLASHCARD QUESTION

Front

What type of wave frequency do microwaves rely on?

Back

Microwave frequency.

4.

FLASHCARD QUESTION

Front

Which electromagnetic waves are used by doctors to detect broken bones?

Back

X-rays.

5.

FLASHCARD QUESTION

Front

What is frequency defined as?

Back

The number of waves that pass over a specific time.

6.

FLASHCARD QUESTION

Front

What is a wave?

Back

A disturbance that transfers energy through space or a medium.

7.

FLASHCARD QUESTION

Front

What is the speed of light in a vacuum?

Back

Approximately 299,792 kilometers per second (km/s).

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