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Y7 SCI TERM 1 PHY QUIZ: CHAPTER 1-2

Total questions: 76

Worksheet time: 1hrs 10mins

Name
Class
Date
1.

What is the net force?

a)

3 N

b)

3 N, right

c)

17 N, right

d)

3 N, left

2.
Who wins the tug of war with what net force?
a)
The person on the left with 20 N
b)
The person on the left with 80 N
c)
The people on the right with 20 N
d)
The people on the right with 100 N
3.
What is the net force?
a)
20 N 
b)
0 N 
c)
400 N 
d)
40 N 
4.

What is the unit to MEASURE force?

a)

Kilogram

b)

Meter

c)

Pounds

d)

Newton

5.

A ____________ is a push or a pull on an object.

a)

friction

b)

force

c)

magnet

d)

gravity

6.
If these teams 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.
7.
Balanced or unbalanced?
a)
balanced
b)
unbalanced
8.

Forces that have a net force of zero Newtons

a)

Balanced force

b)

Unbalanced force

9.
What will cause an object to move?
a)
Applied forces
b)
Balanced forces
c)
Unbalanced forces
10.
What force holds the planets in motion around the sun?
a)
Magnetic
b)
Electrical
c)
Gravitational
d)
Air Resistance
11.
What does the strength of gravity between two objects depend upon?
a)
Mass & distance
b)
Mass & weight
c)
Gravity & inertia
d)
Inertia & mass
12.
All objects in the universe have a gravitational attraction to each other. 
a)
True
b)
False
13.
Jupiter has about 317 times more mass than Earth. What can you infer from this fact? 
a)
That Jupiter’s gravitational force is much weaker than on Earth’s gravitational force.
b)
That Jupiter’s gravitational force is much stronger than Earth’s gravitational force.
c)
That Jupiter’s and Earth’s gravitational forces are equal.
d)
Mass has no effect on the gravitational force between two objects
14.
This type of force resist motion between two surfaces that are pressed together
a)
contact
b)
gravity
c)
friction
15.

Mrs. Gibson creates an experiment with different heights of ramps to see which height makes a toy car travel farther. What is the variable?

a)

Size of the car

b)

Height of the ramp

c)

Distance the car travels

d)

Surface of the ramp

16.

Students roll toy cars down the same ramp with different coverings like carpet, foil, and sandpaper. What are they trying to test?

a)

How does the height of a ramp affect the distance a car will roll?

b)

How does the mass of the car affect the distance a car will roll?

c)

How does the surface of a ramp affect how fast a car will travel?

d)

How does the surface of a ramp affect the distance a car will roll?

17.
Name the missing force...
a)
frictional force
b)
weight force
c)
thrust
d)
buoyant force
18.
Name the missing force...
a)
tension force
b)
gravitational force
c)
normal force
d)
applied force
19.
What does friction produce?
a)
light
b)
sound
c)
heat
d)
gravity
20.
What direction does friction act relative to motion?
a)
in the same direction
b)
in the opposite direction 
c)
need more information
d)
depends on the force
21.

True or False: objects that are smooth have LESS friction than objects that are rough

a)

TRUE

b)

FALSE

22.

Friction is an example of _____________

a)

contact force

b)

non contact force

c)

both of these

d)

none of these

23.
Which of the following is an example of friction that is helpful?
a)
Brakes used on a bike
b)
Tires from a car on the road
c)
Tread on the bottom of your shoes
d)
All are examples that are helpful
24.

What causes an object to fall faster?

a)

Smaller surface area

b)

Larger surface area

c)

If it has a parachute

d)

If it is softer

25.

The larger the surface area of the moving object, the ___________ air resistance there is.

a)

Less

b)

More

c)

Longer

d)

Quicker

26.

Air resistance pushes against falling

objects and __________________.

a)

Speeds them up

b)

Keeps them afloat

c)

Slows them down

d)

Spins them

27.

Which has more air resistance?

a)
b)
28.

Air resistance is a force caused by...

a)

Water pushing against moving objects

b)

Air pushing against moving objects

c)

Gravity pushing against moving objects

d)

Normal force pushing against moving objects

29.

The more streamlined an object is, the...

a)

More air resistance

b)

Less air resistance

c)

Slower air resistance

d)

Faster air resistance

30.

When dropped from the same distance, which will fall to the floor faster?

a)
b)
31.

Which best describes why a falling object will reach its terminal velocity?

a)

Gravity force is equal and opposite air resistance force.

b)

Air resistance force is equal and opposite the freefall velocity.

c)

Gravity force is equal and opposite the object's mass.

d)

The object's mass is equal and opposite the gravity force.

32.

What is a parachute designed to maximize?

a)

Gravity

b)

Air Pressure

c)

Air Resistance

d)

Thrust

33.

What causes objects to fall slowly through the air

a)

Weight

b)

Surface area

c)

The color

d)

Mass

34.

What happens if the weight of an object is equal to or less than the upthrust?

a)

It floats

b)

It sinks

c)

It spins

d)

It explodes!

35.

What happens if the weight of an object is greater than the upthrust?

a)

it floats

b)

it sinks

c)

it bounces

d)

it vibrates

36.

What is the type of force in a rope when the rope is stretch by a weight?

a)

Tension

b)

Gravitational force.

c)

Upthrust.

d)

Thrust.

37.

When a boat is float on a river,

a)

its weight is larger than its upthrust.

b)

its upthrust is larger than its weight.

c)

its upthrust is equal to its weight.

38.

What is energy?

a)

moving energy

b)

stored energy

c)

renewable energy

d)

The ability to do work.

39.

What is potential energy?

a)

moving energy

b)

stored energy

c)

renewable energy

d)

non renewable energy

40.

What is kinetic energy?

a)

moving energy

b)

potential energy

c)

stored energy

d)

renewable energy

41.

Which of these things is an example of potential energy?

a)

a car motor

b)

firewood

c)

battery

d)

a fan

42.

What is given off from energy?

a)

water

b)

heat

c)

smoke

d)

ash

43.

Which of these is an example of kinetic energy?

a)

a bicycle

b)

a battery

c)

a solar panel

d)

firewood

44.

Which Apple has the greatest Gravitational Potential Energy?

a)

The object with a mass of 3kg because its mass is less.

b)

The object with a mass of 50kg because its mass is greater.

c)

Both objects because they are at the same height.

d)

Neither of the objects because they are at the same height.

45.

At what point does Potential Energy transform into Kinetic Energy?

a)

Point A

b)

Point B

c)

Point C

d)

Point D

46.

At what point does the biker have the greatest Potential Energy?

a)

Point A

b)

Point B

c)

Point C

d)

Point D

47.

At what point does the biker have the greatest Kinetic Energy?

a)

Point A

b)

Point B

c)

Point C

d)

Point D

48.

A computer uses what type of energy to operate?

a)

Mechanical

b)

Light

c)

Electric

d)

Sound

49.
What is energy transformation?
a)
a change of energy from one form to another
b)
when energy gets more energy added to it
c)
when energy gets destroyed
d)
a change in intensity
50.
According to the Law of Conservation of Energy...
a)
energy changes form
b)
energy can be created and destroyed
c)
energy flows from one material to the next
d)
energy cannot be created or destroyed
51.

What type of energy does a rock have when it is sitting at the edge of a cliff.

a)

Potential

b)

Kinetic

52.
As a pendulum swings from its highest to lowest position, what happens to its kinetic and potential energy? 
a)
Both the potential energy and kinetic energy decrease
b)
The potential energy decreases while the kinetic energy increases 
c)
The kinetic energy decreases while the potential energy increases 
d)
Bothe the potential energy and kinetic energy increase 
53.

Which type of energy is used when you're running?

a)

potential

b)

kinetic

54.

What type of energy do you use when you're swimming?

a)

Potential

b)

Kinetic

c)

Heat

d)

Thermal

55.

At which point of the roller coaster is potential energy the greatest?

a)

W

b)

X

c)

Y

d)

Z

56.

The faster an object moves, the ________ kinetic energy it has.

a)

more

b)

less

57.
What kind of energy is represented in this picture?
a)
Thermal
b)
Potential
c)
Nuclear
d)
Mechanical
58.
What kind of energy is represented in the picture?
a)
Thermal
b)
Chemical
c)
Sound
d)
Nuclear
59.
A battery converts what type of energy to another?
a)
sound to kinetic
b)
light to heat
c)
mechanical to electrical
d)
chemical to electrical
60.
The glow sticks produce light for a short amount of time. The light from the glow stick is a conversion from what to what?
a)
thermal to light
b)
gravitational to potential
c)
radiant to electrical
d)
chemical to light
61.
Wind turbines and windmills convert what energy to another?
a)
Kinetic to electric
b)
Gravitational potential to electric
c)
Mechanical to potential
d)
Thermal to sound
62.
What machine changes electrical energy into light and sound energy?
a)
battery
b)
lightbulb
c)
alarm clock
d)
apple
63.
The purpose of the panels is to change solar energy into ____________.
a)
light energy
b)
electrical energy
c)
chemical energy
d)
mechanical energy
64.
What machine changes chemical energy into heat, light and sound energy
a)
blender
b)
firecracker
c)
lightbulb
d)
apple
65.
Where does most of the energy go in this transformation.
a)
Electrical energy
b)
Light
c)
Heat
d)
other
66.
Where does most of the energy go for this transformation.
a)
heat
b)
electrical
c)
light
d)
joules
67.

What is this diagram called?

a)

Stankey Diagram

b)

Sankey Diagram

c)

Sankay Diagram

d)

Samkay Diagram

68.

The energy efficiency shown in this diagram is:

a)

About 10%.

b)

About 30%.

c)

About 60%.

d)

Impossible to tell.

69.
What type of energy is best represented by a battery?
a)
Sound
b)
Thermal
c)
Mechanical
d)
Chemical
70.

True or False. Energy cannot be created or destroyed, rather it is transformed from one energy type to another.

a)

True

b)

False

71.

Identify the energy transfer

a)

electrical to chemical to light

b)

kinetic to potential

c)

chemical to electrical to light

d)

light to sound

72.

When you eat food, your body gains ___________ energy.

a)

electrical

b)

chemical

c)

thermal

d)

light

73.

When you eat food, your body gains ___________ energy.

a)

electrical

b)

chemical

c)

thermal

d)

light

74.

What word or words describes kinetic energy?

a)

Energy of position

b)

stored energy

c)

movement

d)

not moving

75.

Fire is an example of what two energies?

a)

Electrical and Sound

b)

Mechanical and Sound

c)

Light and Thermal

d)

Chemical and Elastical

76.
Which of the following is NOT a form of energy?
a)
movement
b)
body mass
c)
heat
d)
food

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