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Science MOY Review Units 1-4

Total questions: 61

Worksheet time: 1hrs 5mins

Name
Class
Date
1.
Which of the following represents an element?
a)
H2O
b)
H2
c)
NaCl
d)
CaCO3
2.

What is the difference between Co and CO?

a)

CO is an element but Co is a compound

b)

Nothing is different. They are the same thing.

c)

CO is two elements and Co is only one element

d)

Co is not a pure substance

3.
Evidence of a NEW substance formed from a chemical change is...
a)
Production of Gas
b)
Production of Heat and Light
c)
Production of a Precipitate 
4.
Evidence of a NEW substance formed from a chemical change, resulting in SOLID particles that form or separate out of a liquid is...
a)
Production of Heat or Light
b)
Production of a Precipitate
c)
Production of Gas
5.
A change that alters the identity of a substance resulting in a NEW substance with different properties. 
a)
chemical change
b)
physical change
6.
A change to a substance that occurs WITHOUT forming a new substance, such as a change in a state of matter. 
a)
chemical change
b)
physical change
7.
Characteristics that can be observed or measured without changing the substance, such as color or melting point. 
a)
chemical property
b)
physical property
c)
properties
8.

Match the graph to the description:

"The car is traveling at a constant speed."

a)
b)
c)
d)
9.

Match the graph to the description:

"The car is accelerating speeding up (positive acceleration)."

a)
b)
c)
d)
10.

Match the graph to the description:

"The car is slowing down (negative acceleration)."

a)
b)
c)
d)
11.

Segment O-A: The bus is _________________. It's speed changes from 0m/s to 10 m/s in 5 seconds.

a)

accelerating

b)

decelerating

c)

constant speed

d)

at rest

12.

Segment C-D: The bus is _________________. It has stopped.

a)

accelerating

b)

decelerating

c)

constant speed

d)

at rest

13.
Which of these is a property of metals?
a)
It's malleable
b)
It can't conduct electricity
c)
They are used in food
d)
It's very brittle
14.
Which of the following is a good conductor of heat?
a)
Metal
b)
Nonmetal
c)
Metalloid
15.
Some characteristics of a metal are that it is malleable and ductile.
a)
TRUE
b)
FALSE
16.
If a material can easily be drawn into the shape of a wire, it is
a)
Ductile
b)
Magnetic
c)
Malleable
d)
Reactive
17.
Which element is a metalloid?
a)
Titanium
b)
Selenium
c)
Potassium
d)
Polonium
18.
Kinetic energy is related to 
a)
position or height of an object
b)
speed of an object
19.
Potential energy is related to 
a)
position or height of an object
b)
speed of an object
20.
Stored energy.
a)
Potential Energy
b)
Kinetic Energy
21.
The energy of motion.
a)
Potential Energy
b)
Kinetic Energy
22.
Which would be the most useful for identifying an unknown liquid?
a)
Weight
b)
volume
c)
mass
d)
density
23.
What is the volume of Object X?
a)
10.0 cm3
b)
15.0 cm3
c)
20.0 cm3
d)
25.0 cm3
24.
A object has a volume of 17 mL.  The same object has a mass of 212 g.  What is the density of this object?
a)
12.4 g/m3
b)
12.4 g/mL
c)
1.24 g/mL
d)
12/4 mL/g
25.
You are given the following information: mass = 48 g; volume = 24 cm3. What is the density of this substance? 
a)
2 g/cm3
b)
1,152 g/cm3
c)
0.5 g/cm3
d)
72 g/cm3
26.
What units are used to measure Density?
a)
cm3/g
b)
g
c)
g/cm3
d)
cm3
27.

heat harnessed from deep beneath Earth's surface and converted to useable energy

a)

Geothermal

b)

biomass

c)

wind

d)

solar

28.

Why doesn't the ping-pong ball just shoot up to the ceiling?

a)

air pressure

b)

force of gravity

c)

force of air above it

d)

trick ping-pong ball

29.

Which of the following is an example of an unbalanced force?

a)
b)
c)
d)
30.

How will this object move?

a)

The object will move to the left, as the forces are balanced.

b)

The object will move to the right, as the forces are unbalanced.

c)

The object will move to the left, as the forces are unbalanced.

d)

The object will move to the right, as the forces are balanced.

31.
According to the Law of Conservation of Energy, energy cannot be _________ or ____________. 
a)
destroyed, destroyed
b)
created, saved
c)
created, destroyed
d)
lost, found
32.
Energy transformations occur when...
a)
energy is created through conduction
b)
energy changes from one form to another
c)
two forces slide together that are touching
d)
a chemical reaction takes place
33.
Where is the potential energy the greatest?
a)
A
b)
B
c)
C
d)
D
34.

What is energy?

a)

The ability to do work

b)

A force

c)

Electricity

d)

The ability to transform work

35.
On a roller coaster, where is maximum potential energy?
a)
At the bottom of a big hill
b)
When going around a corner
c)
When going upside down
d)
At the top of a big hill
36.
On a roller coaster, where is maximum kinetic energy?
a)
At the bottom of a big hill
b)
When going around a corner
c)
When going upside down
d)
At the top of a big hill
37.

Where is the kinetic energy the greatest?

a)

A

b)

B

c)

C

d)

D

38.

Which object shows an energy transformation from electrical to mechanical?

a)
b)
c)
d)
39.

The roller coaster cart has the most kinetic energy at position-

a)

W

b)

X

c)

Y

d)

Z

40.

Which items would have this energy transformation: mechanical energy -> electrical energy?

a)

turning on a flashlight

b)

nuclear power plant

c)

wind turbine turning

d)

tanning bed

41.

What is the energy transformation that occurs in an electric pencil sharpener?

a)

mechanical energy to electrical energy

b)

electrical energy to mechanical energy

c)

radiant energy to sound energy

d)

chemical energy to mechanical energy

42.
Gravity attracts all objects towards one another.
a)
False
b)
True
c)
It depends
43.

A runner races in the 100 meter dash. It takes her 10 seconds to finish. What is her average speed?

a)

10 m/s

b)

1000 m/s

c)

100 seconds

d)

10 seconds

44.

Calculate the average speed of a car that travels 60 km in 2 hours.

a)

12 km/h

b)

30 km/h

c)

25 km/h

d)

35 km/h

45.
An inclined plane reduces the amount of force needed to move an object by - 
a)
increasing the distance the object moves.
b)
transferring more of the force to the object
c)
reversing the direction the object is moved.
46.
Out of these which one is an inclined plane, that can make work most easier?
a)
1
b)
2
c)
both
d)
none
47.
The greatest amount of force is required to move the metal block up which inclined plane?
a)
A
b)
B
c)
C
d)
D
48.

Which of the following will require the least force to move the load up the inclined plane?

a)
b)
c)
d)
49.
What is happening at E?
a)
Stationary
b)
Accelerating
c)
Fast steady speed; moving away from the starting position
d)
Steady speed; returning to start position
50.

What is the formula for speed?

a)

speed = distance x time

b)

speed=distance / time

c)

speed = time / distance

d)

speed = distance + time

51.

What does the solid line on this graph represent?

a)

Constant speed

b)

Acceleration

c)

At rest

d)

deceleration

52.

What is the line on this graph showing?

a)

moving away from starting point at a constant speed

b)

moving back towards the starting point at a constant speed

c)

acceleration (getting faster)

d)

deceleration (getting slower)

53.

What is this line of this graph showing?

a)

moving away from starting point at a constant speed

b)

moving back towards the starting point at a constant speed

c)

acceleration (getting faster)

d)

deceleration (getting slower)

54.

What type of energy transformation happens in hydro-electric power?

a)

kinetic to potential

b)

sound to mechanical

c)

chemical to electrical

d)

mechanical to electrical

55.

What is an advantage of producing electricity through hydropower?

a)

land is flooded when dams are built

b)

Hydropower is a clean, renewable source of energy for human use

c)

building dams destroys animal habitats

d)

building dams for hydropower uses up lots of land space

56.

What type of by-products does nuclear energy produce? (a disadvantage)

a)

carbon dioxide

b)

radioactive waste

c)

sulfur dioxide

d)

nitrogen oxide

57.

Which is an advantage of natural gas?

a)

natural gas can be used to heat homes and power cars

b)

natural gas releases sulfur into the air

c)

natural gas in nonrenewable

d)

natural gas in flammable

58.

What type of energy is electrons flowing through a wire?

a)

Electrical energy

b)

Chemical energy

c)

Kinetic energy

d)

Mechanical energy

59.

What type of energy is stored in batteries or food?

a)

Potential energy

b)

Thermal energy

c)

Chemical energy

d)

Mechanical energy

60.
1. What is it called when you generate electricity with a dam and water?
a)
Geothermal Energy
b)
Hydroelectric energy
c)
Radiation energy
61.
2. What is it called when humans generate electricity by using the heat of the Earth?
a)
Geothermal Energy
b)
Hydroelectric Energy
c)
Radiation Energy

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