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WorksheetsPhysical Science Mid-term Review
Total questions: 57
Worksheet time: 5hrs 45mins
Name
Class
Date
1.
A(n) _____ is a possible explanation for an observation that can be tested.
a)
observation
b)
inference
c)
hypothesis
d)
prediction
2.
Using one or more of your senses to gain information is a(n) _____.
a)
observation
b)
inference
c)
hypothesis
d)
prediction
3.
An explanation of an observation that has been tested many times is a(n) _____.
a)
theory
b)
inference
c)
hypothesis
d)
prediction
4.
A logical explanation of an observation is a(n) _____.
a)
theory
b)
inference
c)
hypothesis
d)
prediction
5.
To keep an experiment fair, scientists keep many variables _____.
a)
constant
b)
independent
c)
dependent
d)
variable
6.
A _____ is a pull or a push.
a)
force
b)
friction
c)
gravity
d)
speed
7.
One way that a force can cause the change in an object's motion is to...
a)
do nothing.
b)
eat ice cream.
c)
start the object moving.
d)
shine on the object.
8.
When you type on the keys of your Chromebook you are using a
a)
pull
b)
push
c)
gravity
d)
friction
9.
A _____ moves an object closer to you.
a)
push
b)
pull
c)
friction
d)
cat
10.
How are a push and a pull alike?
a)
You can hear them both.
b)
They are both names of cats.
c)
You can do them both at the same time.
d)
They are both forces.
11.
What force moves an object away from you?
a)
pull
b)
push
c)
gravity
d)
Jedi force
12.
Another way that force can cause the change in an object's motion is to...
a)
change its color.
b)
change its pitch.
c)
change its direction.
d)
change its spots.
13.
_____ is the force that slows and stops motion between touching objects.
a)
Friction
b)
Gravity
c)
Pull
d)
Push
14.
Which has the least friction?
a)
snowboard on a snowy hill
b)
running on the playground
c)
sandpaper on wood
d)
a racer on a track
15.
Why is there less friction between two ice cubes touching than between sandpaper on wood?
a)
They have rough surfaces.
b)
They have loud surfaces.
c)
They have smooth surfaces.
d)
They have bright surfaces.
16.
What is one way to reduce friction?
a)
Put sandpaper between the surfaces that touch.
b)
Push the surfaces closer together.
c)
Shine a light on the surfaces.
d)
Put a slippery substance between the surfaces.
17.
How does friction help us move from place to place?
a)
Friction does not help us.
b)
Friction keeps us from slipping and sliding.
c)
Friction only helps cats.
d)
Friction makes us slip and fall.
18.
In which of the following activity is friction useful?
a)
sliding down a snowy hill on a sled
b)
ice skating
c)
running around a track
d)
roller blading
19.
Why do air planes and race cars have sleek shapes?
a)
to reduce friction from air resistance
b)
to increase air resistance
c)
to look more appealing than cats
d)
so people will buy them
20.
In the image, what force is acting on arrow A?
a)
friction
b)
gravity
c)
push
d)
Jedi force
21.
Is gravity a push or a pull?
a)
push
b)
pull
c)
neither
d)
both
22.
What keeps the Moon in orbit around Earth?
a)
Earth's rotation.
b)
Earth's atmosphere.
c)
Earth's gravity.
d)
Earth's shape.
23.
Which would require the most force to move?
a)
a toy car
b)
a sleeping cat
c)
a science book
d)
a chair with a friend sitting in it
24.
A car traveled 120 km in 2 hours. Using this data, you can calculate its _____.
a)
speed.
b)
velocity.
c)
position.
d)
mass.
25.
An unbalanced force can make all of these things happen except...
a)
a moving object changes direction
b)
an object just sits there
c)
a moving object speeds up
d)
a moving object stops
26.
Balanced forces can cause
a)
an object to speed up or slow down
b)
an object to stay still or move at a constant speed and direction
27.
Who is winning this race?
a)
A
b)
B
28.
Who is winning this race?
a)
A
b)
B
29.
What speed is the person with the red line going?
a)
20 km per hour
b)
10 km per hour
c)
50 km per hour
d)
30 km per hour
30.
When was the ostrich going at a constant speed?
a)
Between 0 and 30 min.
b)
Between 45 and 60 min.
c)
Between 30 and 45 min.
31.
this force is ___________ and there will be
a)
unbalanced, no movement
b)
balanced, movement to the left
c)
balanced, no movement
32.
This force is _____________ and there will be _________________
a)
balanced, movement to back left
b)
unbalanced, movement to the back left
c)
balanced, no movement
33.
If all four forces are balanced, the plane will
a)
plummet to the ground
b)
fly faster and faster
c)
fly slower and slower
d)
fly at a constant speed and direction
34.
If two spheres of different masses, but the same size are dropped at the same time
a)
they will hit the floor at the same time
b)
the larger mass will hit first
c)
the smaller mass will hit first
35.
To measure speed, you need to know...
a)
distance covered and speed
b)
distance covered and time it took
c)
acceleration and distance
d)
direction and time
36.
To measure speed, you need to know...
a)
distance covered and speed
b)
distance covered and time it took
c)
acceleration and distance
d)
direction and time
37.
to determine if something is moving or changing direction you need
a)
a calculator
b)
a tape measure
c)
a magnifying glass
d)
a non-moving background
38.
How much force is required to accelerate 10 kg at a rate of 100 m/s2?
a)
1,000kg
b)
10N
c)
10kg
d)
1,000N
39.
The term for when an object speeds up, slows down, or changes direction
a)
Speed
b)
Velocity
c)
Acceleration
d)
Newtons
40.
What is the acceleration of a 50 kg object pushed with a force of 2,500 newtons?
a)
75,000N
b)
50N
c)
2500N
d)
50m/s2
41.
18 km/s in a northerly direction is an example of
a)
velocity
b)
Speed
c)
acceleration
d)
momentum
42.
The net force of the following diagram is
a)
20 N
b)
Moving to the left
c)
Balanced forces
d)
160 N
43.
Which graph best represents a graph of a car travelling down a freeway at a CONSTANT speed?
a)
A
b)
B
c)
C
d)
D
44.
If forces acting on an object are balanced, then there _________ be a change in motion
a)
will
b)
will not
45.
If a 100 N force acts on a 50 kg car, what will the acceleration be? ( F= m x a)
a)
500m/s2
b)
2m/s2
c)
50m/s2
d)
150 m/s2
46.
The snail is traveling at 5 cm/hr. This is an example of
a)
speed
b)
forces
c)
acceleration
d)
velocity
47.
The runner's motion as they turned the curve to pass the baton is best described as
a)
speed
b)
force
c)
acceleration
d)
velocity
48.
The net force of the following diagram is
a)
620N→
b)
To the right→
c)
20N←
d)
balanced↔
49.
What is the speed of the object represented by the graph?
a)
0.5 m/s
b)
2 m/s
c)
5 m/s
d)
4 m/s
50.
a change in position is defined as
a)
force
b)
motion
c)
speed
d)
acceleration
51.
How are speed and velocity different?
a)
Speed includes direction
b)
Speed indicates momentum
c)
Velocity includes Momentum
d)
Velocity includes direction
52.
A student slides a book across a desk by giving it an initial push. Which of the following is the MOST important reason that the book eventually comes to a stop instead of continuing to slide?
a)
The initial force was too weak to keep the book in motion.
b)
The mass of the book was not enough to keep the book in motion.
c)
The force that occurs when the book rubs against the desk stops the book.
d)
The magnetic force from the Earth stops the book.
53.
When an object is acted on by unbalanced forces, the object will
a)
continue in the same direction
b)
continue at the same speed
c)
accelerate in the direction of the unbalanced force
d)
will have no change in motion
54.
A satellite orbits the Earth at a constant speed. The forces that maintain the constant speed must be -
a)
BALANCED
b)
UNBALANCED
c)
CANCELLED
d)
DISPLACED
55.
The ability to do work can also be defined as-
a)
FORCE
b)
ENERGY
c)
MATTER
d)
PRESSURE
56.
Roller coasters use potential and kinetic energy to move carts around the track. Which selection below organizes the points of potential energy from GREATEST to LEAST?
a)
6,4,1
b)
1,4,6
c)
2,3,5
d)
5,3,2
57.
Potential energy refers to objects that have ________________________ .
a)
changing chemically
b)
stored energy
c)
in motion
d)
changing electrically
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