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Worksheets2nd Semester Test 2023 Review
Total questions: 39
Worksheet time: 20mins
What is GROSS force?
The total force acting on an object
The force left over after equal and opposite forces cancel out.
The force that is messy and dirty.
None of the above
What is the NET force acting on the object in the picture?
35 N
35N Left
25N Left
5 N Right
A type of friction force that acts on a body when there is no relative motion between the object and the surface
Sliding
Rolling
Static
Fluid
Fluid friction occurs when an object is
In the water or air
In the water
In the air
None of the above
A cart is being moved with a net force of 10 N. A weight is dumped into it while the net force remains the same. What happens to the cart’s acceleration?
Increases
Decreases
Stays the same
Not enough information
What type of force is required to overcome static friction or cause a change in an objects motion?
Balanced
Unbalanced
Magnetic Force
Electric force
Which of the objects are considered to be accelerating?
speeding up
slowing down
changing directions
ALL the above
Static charge is due to the transfer of ______ between objects.
Protons
Electrons
Neutrons
Quarks
A _____ circuit has only one path for the electric current to flow.
static
series
parallel
short
A device used to increase or decrease voltage.
transformer
circuit breaker
fuse
none of the above
In a parallel circuit, if one light goes out, the other lights will
dim
go out
remain illuminated with the same brightness
none of the above
Gasses that trap heat in the Earth's atmosphere.
Nonrenewable resource
Greenhouse gasses
Noble gasses
Fossil gasses
A resource that replenishes itself naturally over a span of time. This means that it can be used without worry that it will be depleted permanently.
Greenhouse gas
Nonrenewable resource
Fossil fules
Renewable resource
What is kinetic energy?
The energy that is released from an object.
The energy that an object gains from some outer source.
The energy that is created by water.
The energy that an object possesses due to its motion.
Potential energy means the stored energy in an object at rest.
True
False
Which of the following has the most potential energy?
A car at the top of a hill.
A car that is speeding down the hill.
A person at the top of a hill.
All of these have equal potential energy.
Can you create or destroy energy?
You can destroy certain energy, but not create it.
Yes, only if you are stronger than this energy.
It can be transformed or converted into another form but not destroyed or created.
Energy is always created and destroyed.
What factors determine the amount of kinetic energy an object has?
Mass and weight
Speed and velocity
Mass and speed
Height and mass
Which factors determine the amount of potential energy an object has?
Mass and weight
Speed and velocity
Mass and speed
Height and mass
Kinetic and Potential energy have an inverse relationship. This means...
as one goes up, the other goes up as well.
as one goes up, the other must go down.
that they will always be equal to each other.
none of the above
Which has more kinetic energy?
10 kg car moving at 5 m/s
20 kg van moving at 5 m/s
1 kg ball moving at 6 m/s
they are all the same
Why do people use "simple machines"?
They are cheap
They reduce the effort needed to perform work
They are easy to build
None of the above
Which simple machine is an inclined plane that is wrapped around a cylinder?
Wheel and axel
Wedge
Screw
None of the above
A long beam that rests on a point or support called a fulcrum.
Wheel and axel
lever
screw
wedge
An object that tapers to a thin edge and forces a substance apart.
wedge
inclined plane
wheel and axel
pulley
A grooved circular disk (or disks) that guide a rope or cable pulled around its perimeter.
wedge
inclined plane
wheel and axel
pulley
