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Benchmark 3 Review

Total questions: 30

Worksheet time: 20mins

Name
Class
Date
1.
In an exothermic reaction, 
a)
 heat is released
b)
heat is absorbed
2.
The process of nuclear fusion
a)
decreases temperature
b)
gives the sun it's energy
c)
happens on earth
d)
splits an atom's nucleus
3.
The splitting of a nucleus and releasing large amounts of energy is
a)
nuclear fusion
b)
nuclear fission
c)
half-life
d)
gamma radiation
4.
What is a measure of the amount of matter in an object?
a)
weight
b)
mass
c)
density
d)
volume
5.
Which would change if you were to stand on the moon?
a)
mass
b)
matter
c)
weight
d)
density
6.
Which 2 factors determine the strength of gravity?
a)
mass and weight of objects
b)
mass and distance between objects
c)
size and shape of objects
d)
kinetic and potential energy
7.

Which is an example of a compound?

(Hint - look for a chemical formula!)

a)

Carbon (C)

b)

Air

c)

Table Salt (NaCl)

d)

Strontium (Sr)

8.
The speed and direction of an object is ...
a)
acceleration
b)
speed
c)
motion
d)
velocity
9.
Speeding up, slowing down, and changing direction are all examples of ...
a)
velocity
b)
acceleration
c)
force
d)
gravity
10.
What is Newton's Third Law?
a)
Object in motion stays in motion and an object at rest stays at rest unless acted on by a outside force
b)
Force = mass x acceleration
c)
For every action there is an equal and opposite reaction
d)
all objects pull on other objects
11.
What is Newtons 2nd Law of Motion?
a)
Pancakes 
b)
Force= Mass multiplied by acceleration
c)
For every action there is a equal and opposite  re-action.
d)
Law of gravity 
12.
An object at rest will stay at rest and an object in motion will stay in motion.
a)
The Law of Inertia
b)
The Law of Acceleartion
c)
The Law of Action/Reaction
d)
The Law of Gravity
13.
As objects move farther apart...
a)
gravity decreases
b)
gravity increases
c)
gravity stays the same
d)
gravity has no effect
14.
If distance is 10m and time is 2s, what is speed? (S = D/T) 
a)
S = 2 m/s
b)
S = 20 m/s
c)
S = 5 m/s
d)
S = 8 m/s
15.
How much work is done if 10 N of force is applied for 3 m? (W = F x D) 
a)
20 joules
b)
30 joules
c)
13 joules
d)
3 joules
16.
The rate of work completed on an object is ...
a)
speed
b)
acceleration
c)
power
d)
force
17.
A device that is 2 or more simple machines put together is a...
a)
compound machine
b)
complex machine
c)
concave machine
d)
simple machine
18.
A simple machine that can split things apart or hold a door open.
a)
wedge
b)
screw
c)
lever
d)
hand
19.
Name this simple machine. 
a)
Inclined Plane
b)
Lever
c)
Pulley
d)
Wedge
20.

What is the most appropriate unit to use when measuring a swimming pool’s length?

a)

liter

b)

meter

c)

kilometer

d)

millimeter

21.

When a cannonball is shot into the air through an explosion, the cannon shooting the cannonball is pushed backwards with a force of 10 Newtons. How much force pushed the cannonball forward? (equal and opposite!)

a)

5N

b)

20N

c)

30N

d)

10N

22.

A substance made up of two or more chemically combined elements is —

a)

an element

b)

a mixture

c)

a compound

d)

a solution

23.

Which has kinetic energy?

a)

A ball moving through the air

b)

A ball in someone’s hand

c)

A ball on the ground

d)

A ball in a toy box

24.

A major scientific concern over nuclear energy is how to —

a)

deal with the large amounts of fossil fuels required

b)

prevent the depletion of the ozone layer

c)

reduce the high levels of carbon dioxide emitted into the air

d)

store the waste products safely

25.

Which is the result of using a more powerful motor to run an elevator?

a)

The same amount of work is done in less time.

b)

The same amount of time is needed to move the same distance.

c)

A longer time is needed to move a shorter distance.

d)

Less work is done in the same amount of time.

26.

Which of these properties of an unknown liquid can be found using a beaker, a hot plate, and a temperature probe?

a)

density

b)

boiling point

c)

oxygen level

d)

chemical composition

27.

A type of chemical bond in which electrons are shared between elements is called —

a)

an ionic bond

b)

a covalent bond

c)

a chemical bond

d)

a valence bond

28.

Charlie wants to win a paper airplane flying contest.  He can only use a standard sheet of notebook paper to make his airplane.  He tries several different designs to come up with the design he thinks will fly the farthest.

The distance the paper airplane flies is the-

a)

constant

b)

control

c)

independent variable

d)

dependent variable

29.

Gravity between two objects depends on the (a)   of the objects and the distance between them.

30.

Which types of elements are found to the right of the staircase (except Hydrogen)?

(a)  

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