Worksheets7th Grade Science Winter Final Review 2024
Total questions: 74
Worksheet time: 41mins
Name
Class
Date
1.
What is a force?
a)
A type of energy
b)
The rate at which an object performs work
c)
A push or a pull
d)
An object that makes up matter
2.
Force is measured in:
a)
Newtons
b)
Joules
c)
Meters
d)
Meters per second
3.
What type of force opposes motion, causing moving objects to slow down and/or stop?
a)
An applied force
b)
Friction
c)
Magnetic force
d)
Electric force
4.
The force of friction exerted by a surface depends on:
a)
The color of the surface
b)
The temperature
c)
The smoothness of the surface
d)
The hardness of the surface
5.
Which force is responsible for causing leaves from a tree to fall to Earth’s surface?
a)
Magnetic force
b)
Electric force
c)
Gravitational force
d)
Friction
6.
Which object exerts gravity?
a)
Earth
b)
The moon
c)
A basketball
d)
All of them exert gravity
7.
What force keeps the Earth is orbit around the sun?
a)
Friction
b)
Gravity
c)
Earth’s magnetic force
d)
The sun’s magnetic force
8.
What do we call the invisible force exerted by magnets?
a)
Magnetic force
b)
Electromagnetic force
c)
Electric force
d)
Applied force
9.
What do you call the area of electric force around an electrically charged object?
a)
Electric strength
b)
Electric field
c)
Electric space
d)
Electricity
10.
What happens to the motion of an object forces acting on the object are equal and balanced?
a)
The object begins to move
b)
The object begins to slow down
c)
The motion of the object does not change
11.
What causes an object to move?
a)
When balanced forces act on an object
b)
When unbalanced forces act on an object
c)
When the total force acting on the object equals zero
d)
Both a and c
12.
What pattern of motion best describes Earth’s circular path around the sun?
a)
Sliding
b)
Rotation
c)
Revolution
d)
Rolling
13.
Which of following is an example of a periodic motion?
a)
Rocking
b)
Swinging
c)
Bouncing
d)
All of the above
14.
What is a description for Newton's 1st Law?
a)
For every action there is an equal and opposite reaction.
b)
An object accelerates when a force acts on an object with mass.
c)
An object as rest will stay at rest and an object in motion will continue its motion unless acted on by unbalanced forces.
15.
What is a description for Newton's 2nd Law?
a)
For every action there is an equal and opposite reaction.
b)
An object accelerates when a force acts on an object with mass.
c)
An object as rest will stay at rest and an object in motion will continue its motion unless acted on by unbalanced forces.
16.
What is a description for Newton's 3rd Law?
a)
For every action there is an equal and opposite reaction.
b)
An object accelerates when a force acts on an object with mass.
c)
An object as rest will stay at rest and an object in motion will continue its motion unless acted on by unbalanced forces.
17.
What term describes the tendency of an object to resist change in motion?
a)
Friction
b)
Inertia
c)
Momentum
d)
Collision
18.
What term describes the quantity of motion an object has?
a)
Inertia
b)
Momentum
c)
Force
d)
Gravity
19.
Which of Newton’s Laws is most important to describing what happens to objects during a collision?
a)
Newton’s 1st Law
b)
Newton’s 2nd Law
c)
Newton’s 3rd Law
20.
What is work?
a)
A pull or a push
b)
Applying a pull or a push to move or change something
c)
The rate at which a force is applied to an object
d)
The rate at which energy is used to apply a force to an object
21.
Work is measured in:
a)
Meters
b)
Newtons
c)
Joules
d)
Seconds
22.
Complete the statement: _________ is the ability to do work.
a)
Energy
b)
Power
c)
Force
d)
Pushing or pulling
23.
How much energy does a person use in order to perform 100 Joules of work?
a)
50 Joules of energy
b)
100 Joules of energy
c)
200 Joules of energy
d)
A person doesn’t use energy to perform work
24.
What is power?
a)
The rate at which energy is used or work is performed
b)
The total amount of energy a person uses to perform work
c)
The total amount of force a person applies to move an object
d)
A way to describe the strength of a force
25.
What is a simple machine?
a)
A tool that reduces the amount of work performed
b)
A tool that increases the amount of work performed
c)
A tool that makes it easier to perform work
d)
Both a and b
26.
What is mechanical advantage?
a)
The amplification of an input force for a given output force
b)
The amplification of an output force for a given input force
c)
The reduction in the amount of work performed when using a simple machine
d)
The increase in the amount of work performed when using a simple machine
27.
Identify this simple machine.
a)
Screw
b)
Inclined Plane
c)
Wheel and Axle
d)
Wedge
e)
Lever
28.
Identify this simple machine.
a)
Wheel and Axle
b)
Inclined Plane
c)
Screw
d)
Wedge
e)
Lever
29.
Identify this simple machine.
a)
Pulley
b)
Inclined Plane
c)
Screw
d)
Wheel and Axle
e)
Wedge
30.
Identify this simple machine.
a)
Wedge
b)
Inclined Plane
c)
Screw
d)
Wheel and Axle
e)
Lever
31.
Identify this simple machine.
a)
Lever
b)
Inclined Plane
c)
Screw
d)
Wheel and Axle
e)
Wedge
32.
Identify this simple machine.
a)
Inclined Plane
b)
Screw
c)
Wheel and Axle
d)
Wedge
e)
Lever
33.
Which three simple machines can help you raise an object?
a)
Inclined Plane
b)
Lever
c)
Pulley
d)
Screw
e)
Wheel and Axle
34.
Which simple machine converts a downward force into a horizontal force, which is useful in splitting an object into two parts?
a)
Wedge
b)
Inclined Plane
c)
Screw
d)
Wheel and Axle
e)
Lever
35.
Which simple machine helps connect objects together?
a)
Screw
b)
Inclined Plane
c)
Wheel and Axle
d)
Wedge
e)
Lever
36.
Complete the statement: As the angle of the inclined plane increase...
a)
The force required to raise the object decreases and the force must be applied over a greater distance
b)
The force required to raise the object decreases and the force must be applied over a smaller distance
c)
The force required to raise the object increases and the force must be applied over a greater distance
d)
The force required to raise the object increases and the force must be applied over a smaller distance
37.
What happens to the amount of times you must rotate a screw in order to drive it into an object when you increase the number threads on the screw?
a)
You must rotate the screw more times and apply a stronger force
b)
You must rotate the screw more times but can apply a smaller force
c)
You will rotate the screw less times but must apply a stronger force
d)
You will rotate the screw less times and can apply a smaller force
38.
What do you call the pivot point on a lever?
a)
The input force
b)
The output force
c)
The fulcrum
d)
The angle
39.
Which statement best describes what a pulley is?
a)
A pulley is a wheel attached to a rod.
b)
A pulley is a wheel with a bent rod wrapped around its outside edge.
c)
A pulley is a wheel with a groove around its outside edge. The groove can be used to split objects into two pieces.
d)
A pulley is a wheel with a groove around its outside edge. The groove is for a rope or belt that can move around the pulley.
40.
How much force is needed to lift a 10 Newton box with one pulley?
a)
100 Newtons
b)
10 Newtons
c)
5 Newtons
d)
2.5 Newtons
41.
What is a compound machine?
a)
A type of simple machine
b)
A machine that is made of two or more simple machines
c)
A machine that makes it easier to perform work, but is not a simple machine
d)
A machine that performs less complex tasks compared to simple machines
42.
What is matter?
a)
Anything that takes up space and has mass
b)
A substance that stores energy
c)
The force exerted by a massive object
d)
An electrically charged material
43.
Matter is made of:
a)
Atoms
b)
Large particles
c)
Energy
d)
Either positively or negatively charged particles
44.
Which state of matter is made of atoms so tightly packed together that they cannot move around?
a)
Solid
b)
Liquid
c)
Gas
d)
Plasma
45.
Which state of matter has a definite volume, but takes the shape of its container?
a)
Solid
b)
Liquid
c)
Gas
d)
Plasma
46.
Which state of matter takes the shape and volume of its container?
a)
Solid
b)
Liquid
c)
Gas
d)
Plasma
47.
Which state of matter is made of positively charged atoms with their negatively charged electrons “torn off?”
a)
Solid
b)
Liquid
c)
Gas
d)
Plasma
48.
Which state of matter is not commonly found on Earth, but is the most common state of matter in the universe?
a)
Solid
b)
Liquid
c)
Gas
d)
Plasma
49.
Which definition describes freezing?
a)
The change of a gas to a liquid
b)
The change of a liquid to a solid
c)
The change of a liquid to a gas
d)
The change of a solid to a liquid
50.
Which definition describes melting?
a)
The change of a gas to a liquid
b)
The change of a liquid to a solid
c)
The change of a liquid to a gas
d)
The change of a solid to a liquid
51.
Which definition describes condensation?
a)
The change of a gas to a liquid
b)
The change of a liquid to a solid
c)
The change of a liquid to a gas
d)
The change of a solid to a liquid
52.
Which definition describes evaporation?
a)
The change of a gas to a liquid
b)
The change of a liquid to a solid
c)
The change of a liquid to a gas
d)
The change of a solid to a liquid
53.
Complete the statement: _________ and _________ take place when a substance is warmed (heat is added).
a)
Melting, freezing
b)
Melting, evaporation
c)
Evaporation, freezing
d)
Condensation, freezing
54.
Which of the following is NOT a qualitative property of matter?
a)
Color
b)
Taste
c)
Mass
d)
Texture
55.
Touch describes what properties of matter?
a)
The hardness of an object
b)
The texture of an object
c)
How easily an object bends without breaking
d)
All of the above
56.
Which property of matter reflects how much mass takes up a certain amount of space?
a)
Density
b)
Temperature
c)
Solubility
d)
Viscosity
57.
Which property of measure indicates how much thermal energy an object has?
a)
Mass
b)
Volume
c)
Solubility
d)
Temperature
58.
Conductivity describes:
a)
How well an object transfers thermal energy (heat)
b)
How much a substance resists electricity flowing through it
c)
How “thick” or “thin” a fluid is
d)
Both a and b
59.
Which property of matter describes how well a substance dissolves into another substance?
a)
Solubility
b)
Viscosity
c)
Magnetism
d)
Conductivity
60.
Which of the following is NOT an extensive property of matter?
a)
Mass
b)
Size
c)
Density
d)
Volume
61.
Steel, brass and bronze are examples of:
a)
Nonmetals
b)
Magnetic materials
c)
Alloys
d)
Radioactive substances
62.
What is a physical change?
a)
A change in an object’s size and/or shape
b)
An irreversible change
c)
A change that does NOT change the chemical makeup of a substance
d)
Both a and c
63.
A phase change is:
a)
A physical change
b)
A chemical change
c)
Both a and b
d)
Neither a or b
64.
How does the TOTAL mass of an object change during a chemical or physical change?
a)
Mass will increase or decrease during a chemical or physical change
b)
Mass will increase during a chemical change but decrease during a physical change
c)
Mass will decrease during a chemical change but increase during a physical change
d)
Mass neither increases nor decreases during a chemical or physical change
65.
How many periods are found in the
Phanerozoic eon?
a)
3
b)
6
c)
10
d)
12
66.
When did multicellular life explode on
Earth?
a)
A. 550 billion years
b)
B. 550 million years ago
c)
C. 550 thousand years ago
d)
D. 550 years ago
67.
What is a fossil?
a)
An organism that lived long ago
b)
A type of fish
c)
The preserved remains of a once living organism
d)
The disappearance or death of an entire species
68.
Complete the statement. The oldest fossils are found in the ________ layers of rock.
a)
shallowest
b)
deepest
c)
widest
d)
thinnest
69.
Scientists recognize that there have been how many mass extinction events?
a)
3
b)
5
c)
7
d)
9
70.
A scientist discovers the fossil below in the middle of the Florida peninsula. The fossils is of an ammonoid, a marine organism. What can you predict about the environment in this area during the time the organism lived?
4 lines
71.
Imagine Grace, Daniel, and Oliver are at a playground. Grace chooses the swing, Daniel goes for the slide, and Oliver picks the seesaw. Choose one of them to explain what happens in terms of energy, forces, and motion when they use their chosen playground equipment.
4 lines
72.
When Thomas pushes a skateboard, it pushes back with an equal force. What does this illustrate?
a)
For every action, there is an equal and opposite reaction.
b)
The acceleration of a skateboard is directly proportional to the net force Thomas applies.
c)
A skateboard at rest stays at rest, and a skateboard in motion stays in motion unless acted upon by an external force.
d)
The force of gravity acts between all masses in the universe.
73.
Which of the following is a unit for acceleration?
a)
km/s
b)
m/s2
c)
mi/hr
d)
ft
74.
Velocity is both ____ and _____.
a)
speed , direction
b)
direction, mass
c)
volume, density
d)
direction, magnitude
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