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WorksheetsScience Review 2023
Total questions: 25
Worksheet time: 2mins
Name
Class
Date
1.
One kilometer equals 1000 meters. What does the prefix kilo- mean?
a)
1
b)
100
c)
10
d)
1000
2.
A person walks 1 mile every day for exercise, leaving her front porch at 9:00 am. and returning to her front porch at 9:25 am. What is the total displacement of her daily walk?
a)
1 mile
b)
25 minutes
c)
0
d)
none of the above
3.
Speed is the ratio of the distance an object moves to
a)
the amount of time needed to travel the distance
b)
the direction the object moves
c)
the displacement of the object
d)
the motion of the object
4.
The slope of a line on a distance-time graph is
a)
distance
b)
time
c)
speed
d)
displacement
5.
A horizontal line on a distance-time graph means the object is
a)
moving at a constant speed
b)
slowing down
c)
moving faster
d)
at rest
6.
Objects in free fall near the surface of the Earth experience
a)
constant speed
b)
constant acceleration
c)
constant velocity
d)
constant distance
7.
An object moving at 30 m/s takes 5 s to come to a stop. What is the object’s acceleration?
a)
30 m/s^2
b)
-6 m/s^2
c)
-30 m/s^2
d)
6 m/s^2
8.
An object that is accelerating may be
a)
slowing down
b)
changing direction
c)
gaining speed
d)
all of the above
9.
Your weight equals your
a)
mass
b)
mass divided by the net force acting on you
c)
mass times the acceleration due to gravity
d)
mass times your speed
10.
In which of the following are action and reaction forces involved?
a)
when a tennis racket strikes a tennis ball
b)
when stepping from a curb
c)
when rowing a boat
d)
all of the above
11.
What is conserved when two objects collide in a closed system?
a)
acceleration
b)
speed
c)
momentum
d)
velocity
12.
Which of the following universal forces is the weakest?
a)
electric
b)
magnetic
c)
gravitational
d)
strong nuclear
13.
Two identical test tubes are filled with equal volumes of water and mercury. Which of the following statements is true?
a)
The weight of both liquids is the same.
b)
The bottom area of both test tubes is the same.
c)
The pressure at the bottom of both test tubes is the same.
d)
All of the above.
14.
The pressure of air at sea level is approximately
a)
0 kPa.
b)
101 kPa
c)
10 kPa.
d)
1000 kPa
15.
The buoyant force on an object in a fluid is equal to the weight of the
a)
fluid
b)
fluid displaced by the object
c)
fluid surrounding the object
d)
object
16.
What is the unit of work?
a)
joule
b)
watt
c)
newton/meter
d)
all of the above
17.
If you exert a force of 10.0 N to lift a box a distance of 0.9 m, how much work do you do?
a)
0.1 J
b)
10.9 J
c)
9.0 J
d)
90.0 J
18.
Which of the following statements is true?
a)
To increase power, you can decrease the amount of work you do in a given amount of time, or you can do a given amount of work in less time.
b)
To increase power, you can decrease the amount of work you do in a given amount of time, or you can do a given amount of work in more time.
c)
To increase power, you can increase the amount of work you do in a given amount of time, or you can do a given amount of work in less time.
d)
To increase power, you can increase the amount of work you do in a given amount of time, or you can do a given amount of work in more time.
19.
3730 watts equals about how many horsepower?
a)
5
b)
20
c)
10
d)
30
20.
If you know the input distance and output distance of a machine, which of the following can you calculate?
a)
work
b)
actual mechanical advantage
c)
efficiency
d)
ideal mechanical advantage
21.
The ideal mechanical advantage of a pulley system is equal to the
a)
distance the load has to move
b)
length of the rope
c)
number of rope segments supporting the load
d)
weight of the object being lifted
22.
Work is a transfer of
a)
energy
b)
mass
c)
force
d)
motion
23.
The energy stored in gasoline is
a)
chemical energy
b)
mechanical energy
c)
electromagnetic energy
d)
nuclear energy
24.
The equation E = mc² relates energy and
a)
force
b)
mass
c)
gravity
d)
work
25.
A benefit of a hydrogen fuel cell is that its byproduct is
a)
carbon dioxide
b)
water
c)
oxygen
d)
uranium
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