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Semester Exam 2021

Total questions: 60

Worksheet time: 1hrs 13mins

Name
Class
Date
1.
What states that "every object in the universe attracts every other object"?
a)
Law of Universal Gravitation
b)
Newton's First Law of Motion
c)
My mother
d)
Inertia & gravity
2.

What two things determine the gravity of an object?

a)

mass & weight

b)

mass & distance

c)

density & mass

d)

volume & distance

3.

Which statement about gravity is true?

a)

gravity causes objects to pull towards one another

b)

gravity causes objects to push away from each other

c)

gravity only takes place between planets

d)

the moon doesn't have any gravity

4.
An object with mass has gravity.
a)
True
b)
False 
5.
The amount of matter in an object.
a)
force 
b)
mass
c)
weight 
d)
pressure 
6.
As mass increases, what happens to gravitational force?
a)
increases
b)
decreases
c)
stays the same
d)
i don't know
7.
The force of gravity acting on an object is the object's ______.
a)
mass
b)
matter
c)
weight 
d)
friction 
8.
Which of the following never changes no matter where in the universe?
a)
weight
b)
force
c)
mass
d)
pounds
9.
What best describes the mass and weight of a person as they move around the universe?
a)
mass and weight changes
b)
Mass and weight stays constant
c)
weight remains constant, mass changes
d)
Mass stays constant, weight changes
10.

What is Newton's First Law?

a)

Object in motion stays in motion and an object at rest stays at rest unless acted on by a outside force

b)

Force = mass x acceleration

c)

For every action there is an equal and opposite reaction

d)

The law of inertia

11.
Which type of force(s) will cause a change in an object's motion?
a)
gravity
b)
speed
c)
balanced forces
d)
unbalanced forces
12.
Newton's third law states that any action will have a(n) _______ and ______ reaction
a)
Equal and similar
b)
Equal and opposite
c)
Equal and different
d)
Greater and opposite
13.

A rocket pushes burning gases DOWN which causes the rocket to launch UP. Which law is this?

a)

Law 1

b)

Law 2

c)

Law 3

d)

The Law of Universal Gravitation

14.
If these boys are pulling with the same amount of force.  What will happen?
a)
The boy in blue will win.
b)
They will not move at all.
c)
The boy in red will win.
d)
Both will fall down.
15.
When a person jumps horizontally off the end of a boat, the person goes forward and the boat goes backward. This is an example of 
a)
inertia
b)
action and reaction
c)
Newton's 1st law
d)
Newton's 2nd law
16.

When the force on a car is doubled, the acceleration is doubled.

a)

Newton's

1st

Law of Motion

b)

Newton's

2nd

Law of Motion

c)

Newton's

3rd

Law of Motion

d)

inertia

17.
Which type of force(s) will cause a change in an object's motion?
a)
gravity
b)
speed
c)
balanced forces
d)
unbalanced forces
18.

What is the formula for force?

a)

F=M/A

b)

F=A/M

c)

F=MA

d)

F=MF

19.
A _____ is a pull or a push.
a)
force
b)
friction
c)
gravity
d)
speed
20.

the ability to do work or cause change

a)

gravity

b)

energy

c)

force

d)

work

21.

Which of these describes The Law of Conservation of Energy?

a)

No machine is 100% efficient

b)

Energy is neither created or destroyed

c)

The energy resources of Earth are limited

d)

The energy of a system is always decreasing

22.

_____ is said to be done when force moves an object.

a)

work

b)

energy

c)

motion

d)

force

23.

What is potential energy?

a)

Energy in motion

b)

Renewable energy

c)

Nonrenewable energy

d)

Stored energy

24.

What is kinetic energy?

a)

Energy in motion

b)

Solar energy

c)

Stored energy

d)

Electrical energy

25.

Which is an example of kinetic energy?

a)

Car moving

b)

Parked car on a hill

c)

Can of vegetables

d)

Walls of a building

26.

Which object has the most potential energy?

a)

A bell resting on the ground.

b)

A ball moving at 100 miles per hour

c)

A ball on top of the refrigerator.

d)

A bell resting on top of a tall cliff.

27.

The region in which a magnetic force acts is called a

a)

line of force

b)

pole

c)

magnetic field

d)

field of attractio

28.

Unlike poles of different magnets

a)

attract each other

b)

cancel each other out

c)

repel each other

d)

are insulators

29.

Earth acts like a magnet because its core contains

a)

molton carbon

b)

solid nickel and iron

c)

rocks

d)

liquid nickel and iron

30.
What two forces are required for generators and electric motors to work? 
a)
magnetism and thermal 
b)
electricity and thermal 
c)
electricity and magnetism 
d)
magnetism and radiant 
31.

Electricity is the flow of _________.

a)

Protons

b)

Neutrons

c)

Electrons

d)

energy

32.

In a _______ a spinning turbine moves magnets which generates an electric current.

a)

Motor

b)

Generator

c)

magnet

d)

conductor

33.

A buildup of electric charges on an object is known as

a)

Electron Clouds

b)

Static Electricity

c)

Resistance

d)

I do not know and do not wish to guess.

34.
What kind of circuit is this?
a)
Series
b)
Consecutive
c)
Parallel
d)
Training
35.

An electric current that continually reverses direction over time is known as a(n)

a)

direct current

b)

alternating current

c)

simple current

d)

voltage

36.

Day and night is caused by the _____________ of earth on its axis.

a)

revolution

b)

orbit

c)

rotation

d)

tilt

37.
What are the reasons for the seasons?
a)
Earth's tilt and rotation.
b)
Earth's rotation and revolution.
c)
Earth's tilt and revolution.
d)
Earth's tilt and resolution
38.
How long does it take the Earth to make one REVOLUTION around the Sun?
a)
12 hours
b)
24 hours
c)
365 days
d)
29.5 days
39.
The invisible line that passes through the North Pole and the South Pole is called Earth's ____
a)
axis
b)
equator
c)
ecliptic
d)
prime meridian
40.

When daylight hours are almost equal to night time hours, it is called

a)

equinox

b)

solstice

c)

rotation

d)

revolution

41.

Where does the moon get its light?

a)

Sun's reflection

b)

Earth's reflection

c)

The moon produces its own light

d)

from saturn's rings

42.

How are galaxies held together.

a)

gas

b)

dust

c)

stars

d)

gravitational attraction

43.

The ________________ has the strongest gravitational pull on Earth, that's why it is responsible for Earth's tides.

a)

sun

b)

stars

c)

milky way galaxy

d)

moon

44.

Tides are caused by the interaction of the _______________, ________________ ,and the _________.

a)

sun, moon, and earth

b)

stars, galaxies, and sun

c)

ocean, sky, and atmosphere

d)

solar system, north pole, and south pole

45.

Why do we see phases of the moon?

a)

The tilt of Earth's axis as it rotates.

b)

The moon lights different portions of its surface throughout the month.

c)

As the moon revolves around the Earth, we see different portions of the lit side.

d)

The moon revolves and rotates at the same rate.

46.
When the Northern Hemisphere of Earth is Leaning away from the Sun, What season is the Southern Hemisphere experiencing?
a)
Summer
b)
Winter
c)
Spring
d)
Fall
47.
Why is it warmer in the summer?
a)
Closer to the sun
b)
More direct light from Earth's tilt
c)
Stronger light from the sun
d)
Earth spins slower
48.
What is the source that causes a wave to start?
a)
the moon
b)
vibration
c)
splash
d)
motion
49.

The material through which a wave transfers energy. It may be a solid, liquid and/or gas. An electromagnetic wave does not need it to transfer energy, i.e. light, radio waves, x-rays, etc.

a)

medium

b)

Frequency

c)

Refraction

d)

Reflection

50.

Explain what phenomenon is occurring the picture above.

a)

Light is being refracted as it passes from the air into the water. Therefore, the pencil looks broken

b)

Sunlight is being reflected as it passes from the air into the water. Therefore, the pencil looks broken

c)

waves is being refracted as it passes from the air into the water. Therefore, the pencil looks fixed

d)

None of the above

51.
What is a wave?
a)
A repeated disturbance that moves energy.
b)
A repeated disturbance that moves a substance.
c)
A repeated back-and-forth or up-and-down motion.
d)
The way that light and sound transfer through space.
52.
Waves move _____ as they travel.
a)
objects
b)
matter
c)
energy
d)
medium
53.
"When a wave moves through a different medium it will speed up or slow down. This causes the wave to bend."
What is this a description of?
a)
transmission
b)
refraction
c)
rarefaction
d)
reflection
54.
When a bat uses echolocation it bounces a sound wave off of an object to find them.
 What behavior of waves do bats use to learn about their environment?
a)
compression
b)
transmission
c)
reflection
d)
refraction
55.
This image is representing what wave interaction?
a)
Refraction
b)
Diffraction
c)
Reflection
d)
Interference
56.
Which section of the spectrum is the ONLY one we can see?
a)
X-rays
b)
Visible Light
c)
Gamma Rays
d)
Ultraviolet Rays
57.

In which list are forms of electromagnetic energy arranged in order from longest to shortest wavelength?

a)

Microwave -> Radio wave -> Infrared rays

b)

Visible light -> x-ray -> radio wave

c)

Microwave -> infrared -> visibile light

d)

Infrared -> radio wave -> ultraviolet

58.
Light is a kind of.....
a)
reflection
b)
energy
c)
heat
d)
matter
59.

Which of the following is true about Electromagnetic Waves (EM Waves)?

a)

Light is the only wave that humans can perceive.

b)

Radio waves are used in television broadcast.

c)

Gamma rays have the shortest wavelength.

d)

All of the above.

60.
How are EM waves different from Mechanical waves?
a)
EM waves need a medium
b)
Mechanical waves need a medium
c)
EM waves can travel through empty space only
d)
Mechanical waves transfer matter

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