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SCIENCE 8 REVIEW TEST

Total questions: 40

Worksheet time: 6mins

Name
Class
Date
1.

What formula should be used in finding work if an angle is involved?

a)

W=Fd

b)

W=Fcosθd

2.

Which of the following statements is FALSE about power?

a)

Power is a time-based quantity.

b)

The unit of power in Newton-meter.

c)

Power refers to how fast work is done.

d)

The standard unit of power is the Watt.

3.

Which of the following is the unit for Force?

a)

m

b)

s

c)

N

d)

J

4.

Which of the following quantities is not involved in work?

a)

Force

b)

Mass

c)

Distance

5.

This Law states that the force acting on an object is equal to the product of it's mass and acceleration.

a)

First law

b)

Second law

c)

Third Law

6.

The unit “Watts” was named after _________.

a)

James Watt

b)

John Watt

c)

Johann Watt

d)

Charles Watt

7.

Watts is also equivalent to _______________.

a)

Kg. m/s^2

b)

Kg. m^2/s^2

c)

kg.m^3/s^2

d)

Kg.m/s

8.

Newton or “N” is also equivalent to __________.

a)

Kg. m/s^2

b)

Kg. m^2/s^2

c)

kg.m^3/s^2

d)

Kg.m/s

9.

It is equal to the work done divided by the time in which the work is done.

a)

Power

b)

Energy

c)

Force

d)

Friction

10.

The unit “Joule” is named after ______________.

a)

James Prescott Joule

b)

John Prescott Joule

c)

Jay Prescott Joule

d)

Johann Prescott Joule

11.

Everything that moves has what form of energy?

a)

Kinetic

b)

Motion

c)

Friction

d)

Potential

12.

It is the ability to do work.

a)

Work

b)

Power

c)

Energy

d)

Force

13.

It is an energy stored in an object at rest.

a)

Kinetic

b)

Motion

c)

Friction

d)

Potential

14.

It is the rate of doing work.

a)

Energy

b)

Power

c)

Work

d)

Force

15.

What is the SI unit of Power?

a)

Joule

b)

Watt

c)

Kg. m/s^2

d)

m/s^2

16.

What is the other name for the second law of motion?

a)

Law of Inertia

b)

Law of Interaction

c)

Law of Acceleration

d)

Law of Gravitation

17.

The law of inertia applies to ____________ objects.

a)

Only moving objects

b)

Objects at rest

c)

Both moving and non-moving

d)

None of these

18.

Which formula represents the Law of Acceleration?

a)

F= ma

b)

F=m/a

c)

V=d/t

d)

d=vt

19.

A ball at rest will stay at rest unless an outside force is acted upon it, what law of motion best describes the given situation?

a)

Law of Inertia

b)

Law of Action-Reaction

c)

Law of Acceleration

d)

None of the above

20.

Who is the scientist that formulated the three laws of motion?

a)

Isaac Newton

b)

Albert Einstein

c)

Aristotle

d)

Galileo Galilei

21.

What law states that for every action, there is always an equal opposite reaction?

a)

Law of Inertia

b)

Law of Interaction

c)

Law of Acceleration

22.

Unit of mass

a)

m/s^2

b)

newtons

c)

m/s

d)

kg

23.

A type of reflection that occurs on smooth surfaces is called _______.

a)

Diffuse Reflection

b)

Specular Reflection

24.

A category of wave which needs a medium to travel is called _____.

a)

Mechanical waves

b)

Electromagnetic waves

25.

Light wave is an example of ________.

a)

mechanical wave

b)

electromagnetic wave

26.

The bending of a wave as it moves around an obstacle or passes through a narrow opening.

a)

Reflection

b)

Refraction

c)

Diffraction

d)

Interference

27.

What happens to the speed of sound when it enters different mediums, from gas to liquid?

a)

slower

b)

faster

c)

remains unchanged

28.

A type of object that absorbs or reflects all light.

a)

Transparent

b)

Opaque

c)

Translucent

29.

Bending of waves when passing from one medium to another

a)

Refraction

b)

Interference

c)

Diffraction

d)

Reflection

30.

It is the bouncing back of the wave as it strikes an object.

a)

Diffraction

b)

Reflection

c)

Refraction

d)

Interference

31.

What is the unit of frequency?

a)

m/s

b)

Hz

c)

s

d)

decibels

32.

Medium vibrates perpendicular to the direction of wave motion. What type of wave is being described?

a)

Transverse

b)

Longitudinal

33.

Rhythmic disturbances that carry energy through matter or space

a)

Pulse

b)

Wave

c)

Amplitude

d)

Wavelength

34.

If the surrounding is hot the sounds travels faster.

a)

True

b)

False

35.

A region in a longitudinal wave where the particles are closest together while a rarefaction is a region where the particles are farthest apart.

a)

Compression

b)

Rarefaction

36.

Waves that are usually created by pulling and pushing the material or medium just like in the slinky or spring are called ________.

a)

Transverse

b)

Longitudinal

c)

Mechanical

d)

Electromagnetic

37.

Which of the following is not capable of transmitting sound?

a)

Air

b)

Water

c)

Steel

d)

Vacuum

38.

Which of the following would be most likely transmit sound the best?

a)

Water in the ocean

b)

Steel in the cabinet

c)

Water in a swimming pool

d)

Air in your classroom

39.

Sound wave travel fastest in __________.

a)

Vacuum

b)

Air

c)

Liquids

d)

Solids

40.

This refers to Force multiplied to displacement.

a)

Work

b)

Power

c)

Energy

d)

Force