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Physical Science Semester 1 Review

Total questions: 72

Worksheet time: 4hrs 23mins

Name
Class
Date
1.

The unit used to measure power is the-

a)

Watt

b)

Newton

c)

Joule

d)

Newton*meter

2.

Units for work are-

a)

netwons

b)

joules

c)

meters

d)

seconds

3.

True or false You do work only when you exert a force on an object and move it.

a)

true

b)

false

4.

Amy uses 20N of force to push a lawn mower 10 meters. How much work does she do?

(a)  

5.

Shawn uses 45N of force to stop the cart 1 meter from running his foot over. How much work does he do?

(a)  

6.

A horse performs 15000 joules of work pulling a wagon for 20 seconds. What is the horse's power?

(a)  

7.

If it takes 50 seconds and 10 Joules move some books, calculate how much power is required to complete this task.

(a)  

8.

What is Newton's 2nd Law?

a)

For every action there is an equal and opposite reaction.

b)

Acceleration depends on two variables, the mass of the object and the amount of force.

9.

What is Newton's 3rd Law?

a)

For every action there is an equal and opposite reaction.

b)

Acceleration depends on two variables, the mass of the object and the amount of force.

10.

What explains why objects resist changes in their state of motion?

a)

gravity

b)

inertia

c)

force

d)

friction

11.

Newton's first law states that an object must travel at a constant speed and in ___________, unless an unbalanced force acts on it.

a)

in a circle

b)

a wave like manner

c)

the same direction

12.

The force that prevents a ball rolling on the ground from continuing on it's path forever is...

a)

Friction

b)

Gravity

c)

Inertia

13.
An empty truck and a fully loaded truck are next to each other at a traffic light. When the light turns green, the lighter truck increases speed more quickly. Which of these best explains this situations
a)
Newton's first law
b)
Newton's second law
c)
Newton's third law
d)
Conservation of momentum
14.
The combination of all the forces acting on an object is the...
a)
net force
b)
action force
c)
reaction force
d)
balance force
15.

An object in motion will stay in motion unless acted upon by an unbalanced force, or an object at rest will stay at rest unless acted upon by an unbalanced force.

a)

Newton's 1st Law of Motion

b)

Newton's 2nd Law of Motion

c)

Newton's 3rd Law of Motion

16.

What is the formula for momentum?

a)

p=mvp = mv

b)

p=mvp = \frac{m}{v}

c)

p=m+vp = m + v

d)

p=m−vp = m - v

17.
With unbalanced forces, the object will move in the direction of the _______ force.
a)
larger 
b)
smaller 
c)
equal 
18.

Match the following Types of Friction to their descriptions

a)

1.

Static Friction

b)

2.

Sliding Friction

c)

3.

Fluid Friction

d)

4.

Rolling Friction

19.

The floor pushes up as a person's foot pushes down. Which of Newton's Laws is this?

a)

1st Law

b)

2nd Law

c)

3rd Law

20.
What is a force?
a)
the PUSH or PULL on an object 
b)
The MOTION an object creates
c)
The objects HITTING one another
d)
Going REALLY FAST
21.
If there are two forces going in the SAME direction, you would ...?
a)
(-) Subtract the forces
b)
(+) Add the forces
c)
Neither
d)
(x) Multiply
22.
What is the net force?
a)
65 N left
b)
65 N right
c)
35 N left
d)
35 N right
23.
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.
24.
What is the net force?
a)
11 N left
b)
11 N right
c)
3 N left
d)
3 N right
25.
Which one is balanced?
a)
top
b)
bottom
c)
both
26.
What is the net force?
a)
17 N Right
b)
3 N Right
c)
3 N Left
d)
17 N Left
27.

Which type of friction is shown in the picture?

a)

fluid

b)

static

c)

rolling

d)

sliding

28.

What is the unit for force?

a)

Pound

b)

Newton

c)

Gram

d)

Liter

29.

What is a parachute designed to maximize?

a)

Gravity

b)

Air Pressure

c)

Air Resistance

d)

Thrust

30.

Match the graph to the description:

"The car is slowing down."

a)
b)
c)
d)
31.

What is this graph showing?

a)

Gradually slowing down

b)

Gradually speeding up

c)

Constant speed

d)

Stopped

32.

Segment C-D: The bus is _________________. It has stopped.

a)

accelerating

b)

decelerating

c)

constant speed

d)

at rest

33.

Segment D-E: The bus is _________________. It is gradually increasing it's speed.

a)

accelerating

b)

decelerating

c)

constant speed

d)

at rest

34.

According to the Density Triangle, what is the formula for SPEED?

a)

S = D × TS\ =\ D\ \times\ T  

b)

S = D÷TS\ =\ D\div T  

c)

S = T ÷DS\ =\ T\ \div D  

d)

D = S ×TD\ =\ S\ \times T  

35.

What is happening to the object's speed in section D?

a)

Increasing speed

b)

Decreasing speed

c)

Constant speed

d)

Not moving

36.

How many seconds did it take for the bus to travel from O to C?

a)

4 sec.

b)

10 sec.

c)

13 sec.

d)

14 sec.

37.

What is this graph showing?

a)

At rest

b)

Acceleration

c)

Constant speed of 1 m/s

d)

Gradually speeding up

38.

What is this graph showing?

a)

Fast constant speed

b)

Slow constant speed

c)

At rest

d)

Accelerating

39.
What does this graph represent?
a)
Constant speed
b)
Acceleration
c)
Not moving
40.
What is happening at C?
a)
Stationary
b)
Accelerating
c)
Fast steady speed; moving away from the starting position
d)
Slower steady speed; moving away from the starting position
41.

Match the description to the graph:

"The car is coming back."

a)
b)
c)
d)
42.
What is happening in this graph from point A to B?
a)
The object is accelerating.
b)
The object is not moving.
c)
The object is decelerating.
d)
The object is moving at a constant speed.
43.
What is happening in this graph from point B to C?
a)
The object is going down a hill.
b)
The object is returning to its starting location.
c)
The object is slowing down.
d)
The object is staying still.
44.
According to the graph how far does the person travel in the first 5 seconds?
a)
2 m
b)
10 m
c)
0 m
d)
5 m
45.
What is this object doing?
a)
moving at a constant speed away from start and then stops
b)
increasing speed and then stops
c)
decreasing speed and then constant speed
d)
moving at a constant speed away from start and then constant speed
46.
What is the speed of this object at 3 seconds?
a)
5 m/s
b)
45 m/s
c)
5 s/m
d)
45 s/m
47.

What is the speed of the object for the trip? (remember: v=d/t)

a)

20 mps

b)

80 mps

c)

24 mps

d)

5 mps

48.

7,000 g = ____ kg

a)

70

b)

700

c)

7

d)

0.07

49.

7,000 g = ____ kg

a)

70

b)

700

c)

7

d)

0.07

50.

648 g = ____ mg

a)

6,480

b)

64,800

c)

648,000

d)

64.8

51.

240 cm = ___________ m

a)

2400

b)

24

c)

2.4

d)

0.24

52.

3 km = ___________ mm

a)

30

b)

300

c)

3,000

d)

3,000,000

53.

68 cm = ___________ mm

a)

0.68

b)

6.8

c)

68

d)

680

54.

32.9 km = ___________ cm

a)

32,900

b)

329,000

c)

3,290,000

d)

32,900,000

55.

Using the conversion chart, as the units move to the left, the decimal place moves to the ____________.

a)

Right

b)

Sometimes to the right, sometimes to the left

c)

Left

d)

The decimal place doesn't change between units

56.

What is the basic unit of mass in the metric system?

a)

Liter

b)

Meter

c)

Gram

d)

Kilometer

57.
Which unit is a a measure of volume?
a)
meters
b)
grams
c)
inches
d)
liters
58.
Which unit is the smallest?  
a)
km
b)
mm
c)
m
d)
cm 
59.

Select the largest unit.

a)

kilogram

b)

centigram

c)

decigram

d)

decagram

60.

1000 grams = _____ kilograms

a)

0.0001

b)

1,000,000

c)

10

d)

1

61.

1 L = _______ mL

a)

1

b)

10

c)

100

d)

1000

62.

At which point is potential energy greatest?

a)

W

b)

X

c)

Y

d)

Z

63.

Calculate the potential energy of a car with a mass of 2,500 kg that is on a hill 100 meters above sea level.

(a)  

64.

Alice kicks a soccer ball with a mass of 2.1 kg. The ball leaves the ground moving 30 meters per second. What is the kinetic energy of the soccer ball?

(a)  

65.

Lilly's cat ran through your yard. The cat has a mass of 5 kg. He is running at a speed of 3 m/s. What is the kinetic energy of the cat as he runs? (KE = 1/2mv2)

(a)  

66.

If the 0.3 kg marble was moving at 6 m/s at the bottom of the ramp, how much kinetic energy did the marble have?

(a)  

67.

If 150 Joules of work is needed to move a box 10 meters, what force was used? 

(a)  

68.

An 2 kg apple is hanging in a tree, 10 ft off the ground. What is the gravitational potential energy of the apple?

(a)  

69.

A exercise ball is on a table 2.5 m above the ground. What is the mass of the ball if it has a potential energy of 56.8 J?

(a)  

70.

If these are all moving at the same speed, the vehicle with the greatest KE would be

(Think about their sizes)

a)
b)
c)
d)
71.
What is the formula to calculate speed?
a)
S = t/d
b)
S = d/t
c)
S = d x t
d)
S = t x d
72.

The red car rolled 0.5 meters across the table for 2 seconds. The table was 4 meters high. What was the average speed of the red car in m/sec?

a)

0.25 m/sec

b)

2 m/sec

c)

2.25 m/sec

d)

4 m/sec

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