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WorksheetsPhysics Review 2016
Total questions: 30
Worksheet time: 3600secs
Name
Class
Date
1.
Angela blows air into a balloon and holds the end of it closed with her fingers. When she lets go of the end of the balloon, Angela observes that the release of the air propels the balloon. The propelling of the balloon from the release of the air is an example of which of Newton’s laws?
a)
For every action, there is an equal and opposite reaction.
b)
A force of attraction exists between any two objects with mass.
c)
The force of an object is the product of its mass multiplied by its acceleration.
d)
An object in motion tends to stay in motion unless an unbalanced force acts upon it.
2.
When two unequal forces act in opposite directions on a moving object, the object will...
a)
absorb the forces.
b)
come to an immediate stop
c)
continue to move in the same direction.
d)
move in the same direction as the larger force.
3.
To a person standing motionless on the Earth’s surface on a day with no wind, in which direction would the rain appear to fall?
a)
Vertically
b)
Diagonally
c)
Horizontally
d)
Circularly
4.
During a demonstration on falling objects, a A teacher took two identical sheets of paper and crumpled one of them into a ball and left the other sheet in its flat form. The teacher dropped the crumpled and flat sheets of paper from the same height and at the same time. Which statement best explains why the crumpled sheet landed on the floor before the flat sheet landed on the floor?
a)
The crumpled sheet weighed more than the flat sheet.
b)
Less air resistance acted on the crumpled sheet than on the flat sheet
c)
The crumpled sheet weighed less than the flat sheet
d)
More air resistance acted on the crumpled sheet than on the flat sheet.
5.
Two forces of 400 newtons (N) each are acting on a box. Which statement best describes the forces at work?
a)
The net force applied is zero.
b)
A contact force resists movement.
c)
The net force applied is unbalanced.
d)
A contact force moves the object to the left.
6.
Newton’s first law of motion states that an object at rest will stay at rest unless acted upon by an outside force. Which activity is an example of this law?
a)
A football is kicked off a tee.
b)
A baseball player slides into second base.
c)
A floating stick is carried over a waterfall.
d)
A bicycle travels faster as it goes downhill.
7.
In order for a rope to anchor a boat in place, the rope must exert a force...
a)
equal to the force exerted by the water current in the same direction.
b)
equal to the force exerted by the water current in the opposite direction
c)
greater than the force exerted by the water current in the opposite direction.
d)
greater than the force exerted by the water current in the same direction.
8.
The diagram shows three forces being applied to a crate on a floor. If the crate is to remain STATIONARY, what amount of force must be applied for z?
a)
800 N
b)
1200 N
c)
2000 N
d)
2400 N
9.
A block weighing 10 newtons is resting on a plane inclined 30° to the horizontal. What is the magnitude of the normal force acting on the block?
a)
5 N
b)
7 N
c)
9 N
d)
10 N
10.
When a speeding meteor enters Earth’s atmosphere, it slows down and becomes very hot due to friction. Which factor most influences the amount of friction that a meteor encounters when it enters the atmosphere?
a)
The weather
b)
Magnetism
c)
Solar energy
d)
Air density
11.
A bowling ball sitting motionless on a table exerts a downward force on the table. The force exerted by the table must be...
a)
equal to the force of the ball.
b)
continually changing with the ball.
c)
greater than the force of the ball.
d)
less than the force of the ball.
12.
An engineer builds a model of a machine pivot. Instead of the two parts of the pivot directly touching one another, they have ball bearings between them. As an indication of the amount of FRICTION in the pivot, what should the engineer measure?
a)
the radius of the ball bearings before the pivot has been used
b)
the increase in mass of the ball bearings when the pivot rotates
c)
the temperature increase in the ball bearings when the pivot rotates
d)
the number of ball bearings remaining after the pivot has been used
13.
Leticia is trying to lift a box using the least amount of force. Which first-class lever should she use?
a)
A
b)
B
c)
C
d)
D
14.
A light bulb is connected to a battery by a wire as shown. What happens when the wire is removed from the light bulb?
a)
The light bulb stops shining.
b)
The wire produces electricity.
c)
The light bulb glows brighter.
d)
The battery loses power.
15.
The scientist on the left lifts an 8N weight (1.84 pounds) to chest level. When he releases it, the weight moves toward the scientist on the right. Both scientists are the same height.
Which should the observer most likely record about the weight?
Which should the observer most likely record about the weight?
a)
The scientist on the right will have to move back to point 4 to catch the weight at chest level.
b)
The scientist on the right can remain stationary and catch the weight at chest level.
c)
The weight reaches its highest potential energy at point 2.
d)
The weight reaches its highest kinetic energy at point 3.
16.
During an investigation on energy, Seth rolls marbles of four different masses down a ramp. Which size marble will have the greatest kinetic energy when it reaches the bottom of the ramp?
a)
2 grams
b)
3 grams
c)
5 grams
d)
6 grams
17.
The diagrams below show force being applied to two objects. Which conditions indicate that work was NOT done?
a)
X because the box moved, unlike Z
b)
X because the box had less mass and more force than Z
c)
Z because the box had more mass and less force than X
d)
Z because the box was pushed by two equal forces, unlike X
18.
A certain type of hybrid car utilizes a braking system in which energy is recovered and stored in batteries. This is an example of which type of energy conversion?
a)
kinetic energy converted to potential energy
b)
chemical energy converted to kinetic energy
c)
chemical energy converted to thermal energy
d)
thermal energy converted to potential energy
19.
The primary function of a doorbell circuit is to convert electrical energy into...
a)
sound.
b)
motion.
c)
radiant energy.
d)
chemical energy
20.
The diagram shows a swinging pendulum. Five different positions of the pendulum are labeled. Each position contains different amounts of potential and kinetic energy.
The potential and kinetic energy of the pendulum can be represented on bar graphs. Which graph correctly shows the amount of energy available at position 3?
The potential and kinetic energy of the pendulum can be represented on bar graphs. Which graph correctly shows the amount of energy available at position 3?
a)
A
b)
B
c)
C
d)
D
21.
The table below shows the force and the displacement of four carts. Which cart had the greatest amount of work done?
a)
W
b)
X
c)
Y
d)
Z
22.
A force of 120 newtons (N) was applied to a pulley to lift an object a height of 1 meter (m). If 100 joules (J) of work was done on the weight, how much work was used to overcome the force of friction in the pulley?
a)
1.2 joules
b)
20 joules
c)
120 joules
d)
220 joules
23.
A crane uses a pulley system to make work easier. Which statement best explains how the pulley system in a crane makes work easier?
a)
The pulley system reduces the mass of the object being lifted.
b)
The pulley system reduces the volume of the object being lifted.
c)
The pulley system reduces the amount of force needed to lift an object.
d)
The pulley system reduces the distance the object being lifted needs to move.
24.
The illustration shows a person removing the lid from a crate with a crowbar. Which statement describes the force on the crowbar and the motion of the lid?
a)
As the crowbar is pushed down, the lid moves down.
b)
As the crowbar is pushed down, the lid moves up.
c)
As the crowbar is pulled up, the lid moves down.
d)
As the crowbar is pulled out, the lid moves up.
25.
An electric bulb will stop shining when a light switch is shut off because...
a)
it draws electrons away from the light.
b)
it inserts a semiconductor.
c)
it creates a gap in the circuit.
d)
it reverses the direction of the current.
26.
A wheelbarrow is a compound machine that uses simple machines to change the direction or size of a force. Which simple machines are used to form this compound machine?
a)
lever, pulley
b)
lever, wheel and axle
c)
inclined plane, wedge
d)
wedge, wheel and axle
27.
A roller coaster is climbing up the highest hill on its track. At which point will the front car of the coaster most likely have its greatest POTENTIAL energy?
a)
at the bottom of the highest hill
b)
at the top of the highest hill
c)
at the start of the track
d)
at the end of the track
28.
Wire was looped several times around an iron nail, and the wire’s ends were connected to a battery. For which of these will this device most likely be used?
a)
to produce a heat source
b)
to demonstrate frictional forces
c)
to create a magnetic field
d)
to generate a sound wave
29.
A juggler tosses balls into the air as he juggles. Which form of energy is increasing as the balls travel up into the air?
a)
kinetic energy
b)
thermal energy
c)
potential energy
d)
chemical energy
30.
As the velocity of a runner increases, which type of energy also increases?
a)
kinetic
b)
potential
c)
chemical
d)
electrical
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