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Science 7 Final Review

Total questions: 45

Worksheet time: 44mins

Name
Class
Date
1.

What is potential energy?

a)

moving energy

b)

stored energy

c)

renewable energy

d)

non renewable energy

2.

What is kinetic energy?

a)

moving energy

b)

potential energy

c)

stored energy

d)

renewable energy

3.

Heat always travels from...

a)

Warm to cool

b)

Cool to warm

c)

Warm to warm

d)

Cool to cool

4.

Heating a kettle on a hot stove (burner)

a)

convection

b)

conduction

c)

radiation

d)

connection

5.

Warming up near a campfire is an example of ...

a)

conduction

b)

convection

c)

radiation

d)

connection

6.

At what point does the biker have the greatest Kinetic Energy?

a)

Point A

b)

Point B

c)

Point C

d)

Point D

7.

At what point does the biker have the greatest Potential Energy?

a)

Point A

b)

Point B

c)

Point C

d)

Point D

8.

What type of energy is transformed in the Energy Conversion shown in the image below?

a)

Nuclear Energy

b)

Chemical Energy

c)

Thermal Energy

d)

Electrical Energy

9.

Which of the following is an example of a Thermal Conductor?

a)

Plastic

b)

Styrofoam

c)

Wood

d)

Copper

10.

Which of the following is an example of a Thermal Insulator?

a)

Iron

b)

Aluminum

c)

Wood

d)

Copper

11.

What type of heat transfer is shown here?

a)

convection

b)

conduction

c)

radiation

d)

boiling water

12.

After holding an ice pack against his skin for 20 minutes, the man notices the ice pack is melting. Why is this happening?

a)

radiation - the ice pack is now all melted

b)

conduction - body heat transferred to the cold ice pack

c)

convection - the water in the ice pack flowed in a circle pattern

d)

conduction - heat came from the bigger object to the smaller

13.

If an insulator is doing it's job well, the temperature of an object over time should...

a)

rise slowly

b)

lower quickly

c)

show very little change

d)

rise quickly

14.
When holding a cup of ice water, your warm hand becomes cold. How does the heat transfer?
a)
From the cold cup to your hand
b)
From the cold cup to the warm air
c)
From the ice to your hand
d)
From your warm hand to the cold cup.
15.
Conductors are materials that...
a)
Allow heat to pass through
b)
Stop heat from passing through
c)
Allow cold to pass through
d)
Stop cold from passing through
16.
Which is not a type of simple machine?
a)
spring
b)
screw
c)
pulley
d)
wedge
17.
What type of simple machine is found on the cap of a pickle jar?
a)
lever
b)
inclined plane
c)
pulley
d)
screw
18.
Which is an example of someone using a simple machine to do work?
a)
a boy runs across a football field
b)
a banker counts money
c)
a mother pushes a stroller up a ramp
d)
a girl eats a sandwich
19.
Which is a characteristic of a simple machine?
a)
They run on electricity.
b)
They take a long time to make.
c)
They have few or no moving parts.
d)
They are not very large.
20.

How can simple machines make work easier?

a)

by decreasing the force needed to complete the task

b)

by increasing the friction between the machine and the object

c)

by adding more work on the object than originally applied

d)

by removing the force of gravity on the object

21.

Which simple machine would be the MOST efficient for lifting an object 30 meters off the ground?

a)

pulley

b)

screw

c)

wedge

d)

lever

22.
The motion of Earth around the Sun most affects the
a)
timing of tides.
b)
length of a month.
c)
cycle of the seasons.
d)
phases of the Moon.
23.
About how long does it take Earth to make one complete orbit (revolution) around the Sun?
a)
24 hours
b)
7 day
c)
1 month
d)
1 year
24.
During which season is the northern hemisphere tilted toward the Sun?
a)
Summer
b)
Fall
c)
Winter
d)
Spring
25.
Which of the following is the result of the rotation of Earth?
a)
Cloud formation
b)
Day and night
c)
The seasons
d)
Weather
26.
Which MOST affects the ocean's tides?
a)
the rotation of Earth
b)
the gravitational pull of the Moon
c)
the revolution of Earth around the Sun
d)
the water cycle
27.

Movement of Earth around the sun.

a)

Rotation

b)

Revolution

28.

Spinning of Earth on its axis.

a)

Rotation

b)

Revolution

29.
Which moon phase is shown in this diagram?
a)
new moon
b)
first quarter
c)
full moon
d)
last quarter/3rd quarter
30.
A small object that appears as a streak of light as it enters earth's atmosphere.
a)
Asteroid
b)
Comet
c)
Moon
d)
Meteor
31.
Which is the largest object in our solar system?
a)
Sun
b)
Jupiter
c)
Earth
d)
Pluto
32.
A ball of ice and dust with a tail of gas and dust pointing away from the sun.
a)
Asteroid
b)
Comet
c)
Moon
d)
Meteor
33.
What does orbit mean?
a)
The path a planet takes around the sun.
b)
The spinning of the planet.
c)
When a rocket blasts into space.
d)
To fly into outer space.
34.
Electricity that flows in a closed path is called a
a)
path
b)
current
c)
circuit
35.
____________ stops the flow of electricity.
a)
A conductor
b)
An insulator
c)
A magnet
36.
Identify the conductor below.
a)
cloth rag
b)
plastic bottle
c)
gold ring
37.

The strongest parts of the magnet are ...

a)

fronts

b)

backs

c)

poles

d)

middle

38.

Like magnetic poles push each other away

a)

true

b)

false

39.

What would happen if you touched a south pole end of a magnet to a north pole end of another magnet?

a)

they would be attracted to each other

b)

they would be repelled from each other

40.

Ms. Sabia rubbed two balloons with a piece of wool. What will happen when the balloons are brought near each other?

a)

The balloons will repel each other.

b)

The balloons will attract each other.

c)

The balloons will become positively (+) charged.

d)

The balloons will pop.

41.
Scientist find dinosaur fossils in the bottom of a cliff and mammals fossils in the middle layer, what can be inferred?
a)
dinosaurs ate plants
b)
dinosaurs were eaten by the mammals
c)
they lived at the same time
d)
dinosaurs lived before the mammals
42.
Change over time is
a)
evolution
b)
generation
c)
growth
d)
biogenesis
43.
Natural selection is
a)
survival of the fittest
b)
humans change
c)
two species are the same
d)
more animals survive
44.
This makes an organism more suited to its enviornment
a)
species
b)
lifespan
c)
adaptation
d)
mutation
45.
The diagram shows layers of sedimentary rock and examples of the fossils each layer contains, Which layer contains the oldest fossils? 
a)
A. Layer 2
b)
B. Layer 4
c)
C. Layer 1
d)
D. Layer 3

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