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CBA Review

Total questions: 71

Worksheet time: 1hrs 5mins

Name
Class
Date
1.

The best example of balanced forces is a

a)

bus parked in a garage.

b)

car increasing speed.

c)

ball kicked along a flat surface.

d)

roller coaster slowing down on an incline.

2.

The diagram shows two forces acting on a ball at the same time. Which arrow represents the most likely direction the ball will move?

a)
b)
c)
d)
3.
What is the net force?
a)
20 N 
b)
0 N 
c)
400 N 
d)
40 N 
4.
What is the net force?
a)
10 N
b)
0 N
c)
25 N
d)
1 N
5.
A measurement of how fast an object is moving
a)
Velocity
b)
Speed
c)
Vector
d)
Acceleration
6.
If you travel 10 miles in 5 minutes, what is your speed?
a)
10 mi/min
b)
15 mi/min
c)
50 mi/min
d)
2 mi/min
7.
What is happening in this graph from point A to B?
a)
The object is accelerating.
b)
The object is not moving.
c)
The object is decelerating.
d)
The object is moving at a constant speed.
8.
What is happening in this graph from point B to C?
a)
The object is going down a hill.
b)
The object is returning to its starting location.
c)
The object is slowing down.
d)
The object is staying still.
9.
What is happening at C?
a)
Stationary
b)
Accelerating
c)
Fast steady speed; moving away from the starting position
d)
Slower steady speed; moving away from the starting position
10.
What is the formula to calculate speed?
a)
S = t/d
b)
S = d/t
c)
S = d x t
d)
S = t x d
11.
What does this graph represent?
a)
Constant Speed
b)
Acceleration
c)
Not moving
12.
How long did it take this object to travel 10 m?
a)
0 s
b)
10 s
c)
15 s
d)
20 s
13.
__________ is stored energy. 
a)
Potential
b)
Kinetic
c)
None of the above 
d)
All of the above 
14.
When you are holding a book, energy is stored between the book and Earth; this type of energy is called ________ potential energy. 
a)
Kinetic
b)
Potential
c)
Gravity
d)
Friction 
15.
When you stretch a rubber band, you are storing __________ energy. 
a)
kinetic 
b)
potential
c)
none of the above
d)
all of the above 
16.
Food has _________ energy. 
a)
Potential 
b)
Kinetic 
c)
None of the above 
d)
All of the above 
17.
At which point is potential energy greatest?
a)
W
b)
X
c)
Y
d)
Z
18.
What kind of energy is in a moving skateboard?
a)
Potential
b)
Kinetic
c)
Both potential and kinetic energy
d)
none of the above
19.
What kind of energy is in a rock at the edge of a cliff?
a)
Potential
b)
Kinetic
c)
Both potential and kinetic energy
d)
none of the above
20.
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 
21.
When a pendulum swings, at which point is kinetic energy highest?
a)
1
b)
2
c)
3
d)
4
22.
When a pendulum swings, at which point is potential energy at its greatest?
a)
1
b)
2
c)
3
d)
4
23.
Which of the following energy transformations occur when a lamp that is plugged into a wall socket is functioning correctly?
a)
Chemical to light
b)
Electrical to chemical
c)
Electrical to light
d)
Chemical to electrical
24.
Which of the following shows an energy transformation from chemical energy to electrical to light energy?
a)
A bolt of lightning lights the night sky.
b)
A candle glows brightly in the dark.
c)
A fire in a fireplace lights up a room.
d)
A battery causes a flashlight to shine.
25.
What energy transformations take place when a battery-operated radio is in use?
a)
Electrical to chemical to light
b)
Sound to chemical to mechanical
c)
Chemical to electrical to sound
d)
Light to electrical to thermal
26.
Which of the following devices transforms electrical energy into mechanical energy?
a)
An e-reader
b)
a fan
c)
a manual pencil sharpener
d)
ipod
27.
The picture shows a microwave oven. As a microwave oven is operated, electrical energy is transformed into all of the following types of energy EXCEPT —
a)
solar
b)
light
c)
thermal
d)
mechanical
28.
Where is the potential energy the greatest?
a)
A
b)
B
c)
C
d)
D
29.
The diagram below shows a hot air balloon rising. Propane gas tanks are seen at the bottom of the balloon.  What energy transformations occur when propane gas is used to lift the balloon? 
a)
Mechanical to light to chemical
b)
Chemical to mechanical to thermal 
c)
Thermal to chemical to light
d)
Chemical to thermal to mechanical 
30.

A washing machine turns electrical energy into

a)

Light energy

b)

Chemical energy

c)

Mechanical energy

31.
Jack has a rock. The rock has a mass of 14g and a volume of 2cm3. What is the density of the rock?
a)
7 mL
b)
7 g/cm3
c)
28 g/cm3
d)
1/7 g/cm3
32.
Frank has an eraser. It has a mass of 4g, and a volume of 2cm3. What is its density?
a)
8 g/cm3
b)
2 g/cm3
c)
1/2 g/cm3
d)
24 g/cm3
33.
Frank has a paper clip. It has a mass of 9g and a volume of 3cm3. What is its density?
a)
3 g/cm3
b)
1/3 g/cm3
c)
27 g/cm3
d)
39 g/cm3
34.
How many different elements are in this chemical formula: C2H2ClK3
a)
6
b)
8
c)
2
d)
4
35.
 Which of the following atomic symbols is written correctly? 
a)
OH
b)
oH
c)
fe
d)
H
36.
Which of the following atomic symbols for bromine is written correctly?
a)
bR
b)
BR
c)
Br
d)
br
37.
Which of the following chemical formulas represents a compound? 
a)
C3
b)
O2
c)
CH3CHO
d)
H2
38.
This element occurs in large amount in the atmosphere and small amount in living things.
a)
Nitrogen
b)
Oxygen
c)
Argon
d)
Carbon
39.
Which one has more than one type of atom in it?
a)
Element
b)
Compound 
40.
This picture represents which of the following?
a)
element
b)
compound
c)
mixture
41.
Contains two or more atoms combined
a)
Elements
b)
Compounds
c)
Mixtures
42.
Which of the following is an element?
a)
H2
b)
NaHCO3
c)
NaOH
d)
CO
43.
Examples are water (H2O) and carbon dioxide (CO2).
a)
elements
b)
mixtures
c)
compounds
44.
Hot coffee is stirred with a spoon; the spoon gets hot due to
a)
conduction
b)
convection
c)
radiation
45.
A chair is several feet from a fireplace. The side of the chair facing the fireplace gets warm due to
a)
conduction
b)
convection
c)
radiation
46.
Near the ceiling of a room the air is warmer; the warm air rises because of
a)
conduction
b)
convection
c)
radiation
47.
In a swimming pool, water near the surface is slightly warmer. The warm water rises because of
a)
conduction
b)
convection
c)
radiation
48.
Some cook pans have cooper on the bottom to heat evenly.
Copper transfers heat to the pan by
a)
conduction
b)
convection
c)
radiation
49.
A huge rock at the state park gets hot during the day. The rock was warmed from the Sun by
a)
conduction
b)
convection
c)
radiation
50.
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
51.
Which of the following is NOT a characteristic of most metals?
a)
Brittle
b)
Good conductor
c)
Ductile
d)
Malleable
52.
Where are the non-metallic elements found in the periodic table?
a)
In the middle
b)
In the top rows
c)
On the left-hand side
d)
On the right-hand side
53.
Which element is a metalloid?
a)
Titanium
b)
Selenium
c)
Potassium
d)
Polonium
54.
Which of these grouping of elements could have the characteristic of luster (shiny)?
a)
Metal
b)
Nonmetal
c)
metalloids
d)
Both metals and metalloids
55.
All of the following would classify an element as a metal except?
a)
Dull
b)
Luster
c)
Malleable
d)
Hard
56.
Describe what luster means
a)
How an object reflects light
b)
How soft an object is
c)
If an object floats
d)
If an object can be dug out of the earth.
57.
Which elements are found on the left to middle of The Periodic Table? 
a)
Metals
b)
Nonmetals
c)
Metalloids
d)
Candles
58.
When an object shatters when struck by a hammer.
a)
luster
b)
malleable
c)
brittleness
d)
ductile
59.
I have an object that is dull, brittle, and an insulator, what is it?
a)
metalloid
b)
non-metal
c)
metal
d)
matter
60.
When an object changes shape when struck by a hammer.
a)
luster
b)
malleable
c)
brittleness
d)
ductile
61.
The elements argon, krypton, and xenon are all non-metals. What property would these elements have in common?
a)
Good conductor of thermal energy
b)
Poor conductor of electricity
c)
Shiny, lustrous surface
d)
Soft and malleable
62.
What physical properties are used to classify elements as metals, non-metals, or metalloids?
a)
Color, smell, physical state
b)
Reactivity, streak, hardness
c)
Ability to burn, mass, density
d)
Luster, conductivity, malleability
63.
Unlike non-metals, most metals tend to —
a)
conduct electricity and heat well.
b)
be gases at room temperature.
c)
break easily when hammered.
d)
have less luster and shine.
64.
Non-metals are good conductors of heat and electricity. 
a)
TRUE
b)
FALSE
65.

Students want to raise a large crate from the ground to a deck several feet above the ground. They know it will be easier to move the crate along an inclined plane because the inclined plane will —

a)

reduce the work needed to raise

the crate.

b)

increase the force applied to the

crate

c)

increase the work done on the

crate.

d)

reduce the force necessary to

raise the crate.

66.

Movers needed to move a heavy box from the bottom of some stairs to the top of the stairs. They placed a ramp over the stairs and pushed the box up the ramp.


Which best explains why the movers used a ramp to move the box?

a)

The ramp reduced the amount of

force needed to move the box.

b)

The ramp increased the height that

the box needed to be moved.

c)

The ramp reduced the distance that

the box needed to be moved.

d)

The ramp increased the amount of

friction needed to move the box.

67.

Which simple machine increases the distance over which a load travels and reduces the needed force?

a)

wheel and axle

b)

wedge

c)

pulley

d)

Inclined Plane

68.

You are practicing for an upcoming 100-meter dash and documenting average speed to see your growth. Trial one you ran at 14 seconds, trial two was at 13.8 seconds, and trial three was at 13.2 seconds. What is the combined average speed of all three trials? (round answer to hundredth place – to the second decimal)

a)

7.58 meters/second

b)

7.14 meters/second

c)

7.32 meters/second

d)

7.25 meters/second

69.

What is the average speed of the Worm's Journey?

a)

2.25 meters/minute

b)

2 meters/minute

c)

1 meter/minute

70.

Jose Altuve is at batting practice for the Houston Astros.

What was the average speed of all three hits?

a)

32 m/sec

b)

20.7 m/sec

c)

24 m/sec

d)

27 m/sec

71.

Jose Altuve is at batting practice for the Houston Astros.

What was the average speed of the baseball for his third hit as it traveled in the air?

a)

32 m/sec

b)

20.7 m/sec

c)

24 m/sec

d)

27 m/sec

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