Free Printable REVIEWER IN SCIENCE 8

Worksheets

REVIEWER IN SCIENCE 8

Total questions: 25

Worksheet time: 20mins

Name

Class

Date

Sound travels FASTEST through which of these materials?

Air

Empty space

Metal

Water

Sound is a form of?

energy

pitch

volume

An object that does not vibrate cannot produce

sound

light

heat

electricity

What medium does sound travel through slowest?

gas

solid

liquid

trees

Sound does not travel in space because

Space is too far away.

There is no matter in space.

Space is the final frontier

Space has planets.

Sound moves in a _________.

Transverse wave

Longitudinal wave

Matter that carries sound waves is called a _________

low

high

medium

surface

Sound is caused by?

force

vibrations

instruments

Why is sound able to travel faster through a solid than a gas?

Gas molecules are packed tightly.

Sound does not travel faster through a solid than a gas.

Solid molecules are packed tightly.

Gas molecules move slowly.

10.

True or False: Sound waves are produced when something vibrates.

True

False

11.

As the temperature of a medium increases, the sound waves will travel ____________.

Faster

Slower

As the same speed

12.

The speed of a sound wave depends on

the frequency

the medium

both air temperature and medium

the air temperature

13.

In General Sound waves travel the slowest in __________

solid

liquid

Gas

Plasma

14.

True or False: Sound needs a medium.

True

False

15.

Sound waves travel the fastest through ---

Liquids

Gases

Solids

16.

Which factor does not affect the speed of sound:

temperature

distance

density

elasticity

17.

The ability of a material to bounce back after being disturbed is called:

elasticity

density

rebound

springiness

18.

The more density an object has, the ______________ sound travels through it.

slower

faster

19.

The warmer an object is, the ____________ sound will travel through it.

faster

slower

20.

The unit N/m² is a unit of pressure. 1N/m² is also equivalent to

(a)

21.

Another name for Young's modulus

(a)

22.

We can hear sound on the moon?

TRUE

FALSE

23.

Estimate the speed of sound in a solid if the elastic modulus is 2.7X10⁹ N/m² and its density is 8500kg/m³.

(a)

24.

Find the elastic modulus of a solid metal of a metal that has a speed a speed of sound is 5 300m/s and the density is

2 750kg/m³

(a)

25.

The speed of sound in aluminum is 6320m/s. if its elstic modulus is 1.9x10¹¹ Pa, what is its density?

(a)

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REVIEWER IN SCIENCE 8

Total questions: 25

Worksheet time: 20mins

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