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WorksheetsMidterm Review
Total questions: 92
Worksheet time: 46mins
Name
Class
Date
1.
A variable that stays the same throughout an experiment is called
a)
constant/control
b)
independent variable
c)
dependent variable
d)
unknown
2.
A variable that you can change in an experiment is called
a)
constant/control
b)
independent variable
c)
dependent variable
d)
unknown
3.
A variable that is measured in an experiment, or it changes due to another variable, is called
a)
constant/control
b)
independent variable
c)
dependent variable
d)
unknown
4.
An educated guess based on a background research is
a)
experiment
b)
hypothesis
c)
conclusion
d)
data
5.
A passenger, in the rear seat of a car, is at rest relative to
a)
a pedestrian on a corner ahead
b)
the wheels of the car
c)
the side of the road
d)
the driver
6.
An walks 1 mile from her front porch and returns to the front porch 30 min later. What is her total displacement?
a)
0 mile
b)
1 mile
c)
2 mile
d)
30 minutes
7.
The difference between distance and displacement is
a)
distance has no direction, while displacement does
b)
distance is the total measurements between 2 points
c)
displacement is the shortest distance between two points
d)
all of the above
8.
Speed is
a)
the ratio of acceleration with respect to time
b)
the ratio of distance to amount of time an object moves
c)
the direction the object moves
d)
the motion of the object
9.
Instantaneous speed is measured
a)
overall speed of the trip
b)
average speed of the trip
c)
speed at a particular moment
10.
The slope of a line on a distance vs. time graph represents
a)
distance
b)
displacement
c)
speed
d)
acceleration
11.
The horizontal line on distance vs. time graph represents the object is
a)
at rest
b)
moving at constant speed
c)
moving faster
d)
slowing down
12.
The slope of a speed vs. time graph shows
a)
displacement
b)
velocity
c)
accleearion
d)
speed
13.
An objects moves 50 m in 2 s and rest for 3 s. What is its average speed?
a)
50 m/s
b)
25 m/s
c)
16.5 m/s
d)
10 m/s
14.
The rate at which velocity changes is called
a)
distance
b)
acceleration
c)
speed
d)
vector
15.
An object in free fall, near the surface of the Earth, experiences
a)
constant distance
b)
constant speed
c)
constant velocity
d)
constant acceleration
16.
Identity an example of acceleration
a)
a car moving at constant speed
b)
a ball is at rest
c)
a car goes around a circular track
d)
a skater moving at a constant speed on a straight track
17.
Suppose you increases your walking speed from 0 m/s to 5 m/s in 5s. Find your acceleration.
a)
0 m/s2
b)
1 m/s2
c)
2 m/s2
d)
5 m/s2
18.
An object is moving at 20 m/s takes 4s to come to a stop. What is its acceleration?
a)
-5 m/s2
b)
-20 m/s2
c)
5 m/s2
d)
20 m/s2
19.
Instantaneous acceleration is
a)
how fast an acceleration changes at a specific instant
b)
how fast a velocity changes at a specific instant
c)
how fast a distance changes at a specific instant
d)
none of the above
20.
An object that is accelerating maybe
a)
speeding up
b)
slowing down
c)
change direction
d)
all of the above
21.
Describe a train's acceleration that changes its speed from 5 m/s to 15 m/s in 30 seconds.
a)
the train's acceleration is negative
b)
the train's acceleration is positive
c)
the train's acceleration is zero
d)
the train will comes to rest
22.
The SI unit for force is
a)
kilogram
b)
meter
c)
newton
d)
Joule
23.
When unbalanced force acting on an objects,
a)
the inertia of the object decreases
b)
the inertia of the object increases
c)
the object accelerates
d)
nothing happens to the object
24.
When a pair of balanced forces acts on an object, the net force
a)
equals to one of the forces
b)
equals to zero
c)
is greater than both of forces combined
d)
is greater than one of the forces
25.
A flying airplane encounters
a)
rolling friction
b)
sliding friction
c)
static friction
d)
fluid friction
26.
As you push a cereal box across a tabletop, the sliding friction acting on the cereal box
a)
acts in the direction opposite of motion
b)
acts in the direction of motion
c)
is usually grater than static friction
d)
equals to the weight of the box
27.
What forces acting on a falling paper?
a)
weight and sliding friction
b)
air resistance and fluid friction
c)
air resistance and gravity
d)
static friction and gravity
28.
An open parachute increases _____ of falling sky diver by increasing surface area
a)
terminal velocity
b)
air resistance
c)
weight of the sky diver
d)
surface area
29.
What is the property of matter that resists changes in motion?
a)
friction
b)
gravity
c)
inertia
d)
weight
30.
Projectile motion causes by
a)
an initial velocity
b)
the downward force of gravity
c)
terminal velocity
d)
an initial velocity and the downward force of gravity
31.
An orange might roll off your cafeteria tray when you stop suddenly because of
a)
the centripetal force acting on the orange
b)
the balanced force acting on the orange
c)
the friction force acting on the orange
d)
the orange's inertia
32.
In which situation are action-reaction forces involved?
a)
when walking
b)
when swimming
c)
when a rocket is launched
d)
all of the above
33.
Find the force of a 2 kg object accelerates at 4 m/s2.
a)
0.5 N
b)
2 N
c)
4 N
d)
8 N
34.
If a force of 15 N is applied to a 3 kg object, what is its acceleration?
a)
0.2 m/s2
b)
5 m/s2
c)
12 m/s2
d)
45 m/s2
35.
When 2 objects collide in a closed system, _______ is conserved.
a)
acceleration
b)
friction
c)
force
d)
momentum
36.
What is the momentum of 30 kg bike moving with a speed of 6 m/s?
a)
0.04 kg*m/s
b)
5 kg*m/s
c)
24 kg*m/s
d)
180 kg*m/s
37.
An astronaut travels away from Earth,
a)
her weight increases and her mass stays the same
b)
her weight decreases and her mass increases
c)
her weight increases and her mass decreases
d)
her weight decreases and her mass stays the same
38.
Centripetal forces keep an object moves in a
a)
circle
b)
curved line
c)
parabolic path
d)
straight line
39.
A mechanical wave can move through
a)
gas
b)
liquid
c)
solid
d)
all of the above
40.
Transverse and longitudinal waves both
a)
moves at right angles to the vibration of the medium
b)
have compressions and rarefactions
c)
transfer energy through the medium
d)
are capable of moving along the medium
41.
_____ waves move perpendicular to the vibration of the medium.
a)
a longitudinal wave
b)
a surface wave
c)
a transverse wave
d)
all of the above
42.
_____ waves move parallel to the vibration of the medium.
a)
a longitudinal wave
b)
a surface wave
c)
a transverse wave
d)
all of the above
43.
An ocean wave is an example of
a)
a longitudinal wave
b)
a surface wave
c)
a transverse wave
d)
a wavy wave
44.
A ______ wave is made of series of compressions and rarefractions.
a)
a longitudinal wave
b)
a surface wave
c)
a transverse wave
d)
a wavy wave
45.
Find a frequency of a wave that is 6 m long and has a speed of 12 m/s.
a)
0.5 Hz
b)
2 Hz
c)
6 Hz
d)
72 Hz
46.
A wavelength of 45 nm and a frequency of 3 Hz. What is its speed?
a)
0.07 nm/s
b)
15 nm/s
c)
42 nm/s
d)
135 nm/s
47.
The distance from the equilibrium (rest position) to the highest or lowest point of a wave
a)
amplitude
b)
crest
c)
trough
d)
wavelength
48.
A period is a the length of time it takes for
a)
a wave to travel the length of a rope
b)
2 complete wavelengths to pass a fixed point
c)
1 complete wavelength to pass a fixed point
d)
a disturbance to start a wave
49.
Amplitude relates to
a)
the maximum distance from the rest position
b)
the amount of energy carried by the wave
c)
both of the reasons
d)
neither of the reasons
50.
What considers as a medium
a)
solid
b)
liquid
c)
gas
d)
all of the above
51.
When frequency of a wave increases, its wavelength
a)
decreases
b)
increases
c)
stays the same
52.
A ball hits a wall and rolls back is an example of
a)
diffraction
b)
interference
c)
reflection
d)
refraction
53.
How does reflection differ from refraction and diffraction?
a)
Reflection is the only one that changes in the wave.
b)
Only reflection affects all types of mechanical waves.
c)
Only reflection changes the direction of a wave.
d)
Only reflection wave does not continue to move forward.
54.
Refraction occurs when the waves
a)
enter a new medium at an angle.
b)
enter a new medium head-on.
c)
change direction within a medium.
d)
strike an obstacle larger than the wavelength.
55.
Which property of a wave determines how much it will diffract when it hits an obstacle?
a)
amplitude
b)
frequency
c)
period
d)
wavelength
56.
When two waves combine to produce a wave with larger amplitudes, it encounters
a)
constructive interference
b)
destructive interference
c)
diffraction
d)
standing wave
57.
A __________ forms only if half a wavelength fits exactly into the length of a vibrating cord.
a)
longitudinal wave
b)
standing wave
c)
surface wave
d)
transverse wave
58.
A sound wave is an example of a
a)
longitudinal wave
b)
standing wave
c)
surface wave
d)
transverse wave
59.
In which medium does sound travel the fastest?
a)
gas
b)
liquid
c)
solid
d)
same speed in all mediums
60.
A car siren sounds louder as it approaches you than when it moves away from you. This known as
a)
diffraction
b)
the Doppler effect
c)
rarefraction
d)
ultrasound
61.
In 1926, Michelson was able to measure the speed of light using
a)
lanterns
b)
mirrors
c)
stars
d)
sunlight
62.
Newton's prism experiment shows that white sunlight is made up of
a)
only longest wavelengths in the spectrum
b)
only blue light when separated by a prism
c)
the full electromagnetic spectrum
d)
all colors of the visible spectrum
63.
Red sunrises are the result of
a)
scattering
b)
polarization
c)
interference
d)
absorption
64.
Electromagnetic waves vary in
a)
their directions
b)
the speed they travel in vacuum
c)
the way they reflect
d)
wavelength and frequency
65.
Light acts like
a)
a particle
b)
a wave
c)
neither a wave nor a particle
d)
both as wave and as particle
66.
An electromagnetic wave in a vacuum has a wavelength of 1.0 m. What is its frequency?
a)
1 x 108 Hz
b)
1 x 108 m/s
c)
3 x 108 Hz
d)
3 x 108 m/s
67.
Because light travels in a straight line and casts a shadow, Newton hypothesized that light is
a)
heat
b)
radiation
c)
a stream of particles
d)
a wave
68.
______ travel outward from a light source in all directions
a)
electrons
b)
lights
c)
photons
d)
waves
69.
As photons move away from the source, its ________ decreases.
a)
frequency
b)
intensity
c)
wavelength
d)
visibility
70.
X-rays have shorter wavelength than
a)
radio waves
b)
infrared
c)
gamma rays
d)
microwaves
71.
The electromagnetic spectrum is the full range of ______ of electromagnetic radiation.
a)
energy
b)
frequency
c)
visible light
d)
wavelengths
72.
The waves with the highest frequency in the electromagnetic spectrum is
a)
infrared waves
b)
gamma rays
c)
radio waves
d)
X-rays
73.
The waves with the longest wavelengths in the electromagnetic spectrum is
a)
infrared waves
b)
gamma rays
c)
radio waves
d)
X-rays
74.
Cellphones use ___________.
a)
infrared waves
b)
ultraviolet waves
c)
radio waves
d)
microwaves
75.
X-rays photographs show softer tissues
a)
as bright white areas.
b)
as dark, highly exposed areas.
c)
as invisible.
d)
as same as dense bones.
76.
A type of materials transmits all light.
a)
opaque
b)
translucent
c)
transparent
77.
A type of materials absorb all light.
a)
opaque
b)
translucent
c)
transparent
78.
A type of materials scatter some light.
a)
opaque
b)
translucent
c)
transparent
79.
When does a light wave bends when it passes from 1 medium into another?
a)
reflection
b)
refraction
c)
polarization
d)
scattering
80.
_______ is used to allow sunglasses to work.
a)
reflection
b)
refraction
c)
polarization
d)
scattering
81.
The slope of this graph presents
a)
acceleration
b)
distance
c)
speed
d)
time
82.
From 0 s to 5 s, the object is
a)
moving away
b)
at rest
c)
going back
83.
From 15 s to 30 s, the object is
a)
moving away
b)
at rest
c)
going back
84.
From 5 s to 15 s, the object is
a)
moving away
b)
at rest
c)
going back
85.
The slope of a velocity vs. time graph represents
a)
acceleration
b)
distance
c)
speed
d)
time
86.
From D-E, the object is
a)
at rest.
b)
moving at a constant speed.
c)
slowing down.
d)
speeding up.
87.
From B-C, the object is
a)
at rest.
b)
moving at a constant speed.
c)
slowing down.
d)
speeding up.
88.
From A-B, the object is
a)
at rest.
b)
moving at a constant speed.
c)
slowing down.
d)
speeding up.
89.
From C-D, the object is
a)
at rest.
b)
moving at a constant speed.
c)
slowing down.
d)
speeding up.
90.
The control/constant is
a)
the speed working on the problems
b)
the uses of calculators & the math problems
c)
the uses of calculators
91.
The independent variable is
a)
the speed working on the problems
b)
the uses of calculators & the math problems
c)
the uses of calculators
92.
The dependent variable is
a)
the speed working on the problems
b)
the uses of calculators & the math problems
c)
the uses of calculators
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