light and sound revision

light and sound revision

7th Grade

25 Qs

quiz-placeholder

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light and sound revision

light and sound revision

Assessment

Quiz

Other Sciences

7th Grade

Practice Problem

Hard

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25 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

The arrow in the diagram below shows a point on a light wave that stops as it interacts with matter. Which type of interaction does the arrow represent?

Absorption

Reflection

Refraction

Transmission

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

Which interactions of light with matter are taking place in the picture below?

diffraction, reflection, and absorption

reflection, refraction, and transmission

reflection, scattering, and diffraction

translucent, transparent, and opaque

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

In which medium do sound waves travel the slowest?

Lead

Air at 0° C

Steel

Fresh water

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is the speed of sound through glass at 25?

3,650 m/s

2,680 m/s

5,170 m/s

4,480 m/s

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

Which type of electromagnetic wave has the longest wavelength?

Visible light

Radio waves

Ultraviolet rays

Gamma rays

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

The electromagnetic waves with the highest frequencies and the shortest wavelength are called

radio waves.

gamma rays.

X-rays.

visible light.

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

The hot object always emit the ----------- waves?

Infrared.

Ultraviolet

X-rays

Gamma Rays

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