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6th Grade Science Semester Review

Total questions: 36

Worksheet time: 59mins

Name
Class
Date
1.

When the metal magnesium (Mg) is burned in the presence of the nonmetal oxygen (O2), a white light and an increase in temperature occurs to produce a white-powdery substance called magnesium oxide (MgO).


Which answer choice best describes the pure substance magnesium oxide (MgO) that was produced?

a)

an element

b)

a mixture

c)

a solution

d)

a compound

2.

Which model most likely represents the chemical structure classified as a pure substance that is an element?

a)
b)
c)
d)
3.

The data table shows the recorded observations of four different substances when combined with water.


Based on the recorded observations, which substances indicate evidence that a chemical change occurred?

a)

Substances I and II

b)

Substances I and III

c)

Substances I , II, and III

d)

Substances II and IV

4.

Which is NOT evidence of a chemical change?

a)

Color change

b)

temperature change

c)

formation of precipitation

d)

broken pieces

5.

Which answer choice best describes an example of a chemical change?

a)

A baseball hitting a roof.

b)

The roof of the car denting.

c)

Paint cracking and chipping.

d)

Exposed metal rusts.

6.

Matter is anything that takes up space

a)

true

b)

false

7.

A fruit salad is a homogeneous mixture

a)

true

b)

false

8.

When a rubber band stretched it has____ energy

a)

nucular

b)

potential

c)

kinetic

d)

chemical

9.

A green plant has _____ energy

a)

Chemical

b)

Nuclear

c)

Thermal

d)

Jeremiah

10.

another name for a homogeneous mixture is A______

a)

Micheal

b)

solution

c)

math

d)

red monkey

11.
Which of the following is not a compound?
a)
HCl
b)
Cl
c)
NaCl
d)
CO2
12.
Which of the following represents an element?
a)
H2O
b)
H2
c)
NaCl
d)
CaCO3
13.

Which mineral is HARDER than quartz?

a)

Topaz, Corundum, and Diamond

b)

Feldspar. Apatite, and Talc

c)

Talc, Gypsum, Topaz

d)

Diamond, Calcite, Fluorite

14.
Using this scale, which mineral can scratch a Drill bit?
a)
Talc 
b)
Topaz
c)
Corundrum
d)
Quartz
15.
Which of these is a property of metals?
a)
Malleable
b)
Good Insulator
c)
Dull
d)
Very brittle
16.

Silicon is a semiconductor and has properties of both metals and nonmetals. What type of element is Silicon?

a)

Metal

b)

Nonmetal

c)

Metalloid

d)

Compound

17.
Stored energy in water behind a dam falls and changes into mechanical energy that turns a turbine that turns coils in a generator that produces electrical energy.  What is this?
a)
Fossil Fuel Power Plant
b)
Nonrenewable Power Plant
c)
Nuclear Power Plant 
d)
Hydroelectric Power Plant
18.
Oil, Natural Gas, Nuclear, Coal - What do these items have in common?
a)
They are examples of inexhaustible energy resources.
b)
They are examples of renewable energy resources.
c)
They are examples of energy resources that do not cause pollution.
d)
They are examples of nonrenewable energy resources.
19.
Which of the following energy resources is nonrenewable?
a)
Biomass
b)
Geothermal
c)
Fossil Fuel
d)
Hydropower
20.
Oil, natural gas, and coal are called ________resources because they are not easy to replace.
a)
fossil fuels
b)
conservation
c)
natural resources
d)
nonrenewable
21.
__________ is an energy resource that WILL NOT run out in the next several hundred years.
a)
Renewable Energy Resource
b)
Nonrenewable Energy Resource
c)
Fossil Fuel
d)
Forever Fuel
22.
Some power plants pump water down deep holes into hot rock. The hot rock heats the water, which turns the water into steam. The steam rushes back to Earth’s surface and is used to make electricity. This plant is generating which alternative energy resource?
a)
biomass
b)
wind
c)
solar energy
d)
geothermal energy
23.

At which point of the roller coaster is potential energy the greatest?

a)

W

b)

X

c)

Y

d)

Z

24.
When a pendulum swings, at which point is kinetic energy highest?
a)
1
b)
2
c)
3
d)
4
25.
I have the most potential energy if I am: 
a)
5 feet high
b)
10 feet high
c)
15 feet high
d)
20 feet high
26.
Which is the best example that something has kinetic energy?
a)
a. a car parked on a steep hill 
b)
b. a tennis ball rolling across the court
c)
c. a picture hanging on the wall 
d)
d. a piece of coal before it's burned 
27.
Which is an example of potential energy?
a)
a roller coaster speeding down a hill
b)
the pulled back string on an archers's bow
c)
releasing the strings on a guitar
d)
an electric current lighting a light bulb
28.
Explain what happens to the potential energy of a rock as it falls off the side of a cliff.
a)
The kinetic energy decreases as the potential energy increases.
b)
The kinetic energy decreases as the potential energy decreases.
c)
The potential energy decreases as the kinetic energy increases.
d)
The potential energy decreases as the kinetic energy decreases. 
29.
Students pulled the same mass up an inclined plane that was 20 cm, 30 cm, and 40 cm long. Each time, they used a spring scale to measure the force needed to pull the mass up the inclined plane. What did they conclude?
a)
Less force was needed on the 20 cm plane
b)
More force was needed on the 40 cm inclined plane.
c)
The least amount of force was needed on the 40 cm inclined plane.
d)
The least amount of force was needed on the 30 cm inclined plane.
30.

The illustraction shows a wooden block being pulled up an inclined plane with a spring scale. What change in the experimental setup would require more force to pull the block up the inclined plane?

a)

Using a much longer inclined plane.

b)

Pulling the wooden block more quickly.

c)

Reducing the mass of the wooden block.

d)

Increasing the height of the inclined plane.

31.

The unit for force is _____.

a)

A. Neutrons

b)

B. Newtons

c)

C. Grams

d)

D. Meters

32.
What is the net force?
a)
20 N 
b)
0 N 
c)
400 N 
d)
40 N 
33.
A box rests motionless on the ground. One student is pushing the box to the right with a force of 2 Newtons. The other student is pushing to the left with a force of 5 Newtons. In which direction will the box move?
a)
Right
b)
Left
c)
No movement
34.
Students are playing tug-of-war. If group B pulls the rope to the right with a force of 400 N and group A pulls the rope to the left with a force of 250 N, what will happen to the ribbon in the middle of the rope?
a)
The ribbon will move to the left and group A will win the tug-of-war.
b)
The ribbon will move to the left and group B will win the tug-of-war.
c)
The ribbon will move to the right and group B will win the tug-of-war.
d)
The ribbon will move to the right and group A will win the tug-of-war.
35.

What gas makes up most of Earth's atmosphere?

a)

Hydrogen

b)

Oxygen

c)

Carbon

d)

Nitrogen

36.

Everything we touch is made of…

a)

Atoms

b)

Air

c)

Carbon

d)

Magic

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