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4.5 LCA Review Test

Total questions: 57

Worksheet time: 1hrs 8mins

Name
Class
Date
1.
1
a)
a
b)
b
c)
c
d)
d
2.
2
a)
a
b)
b
c)
c
d)
d
3.
4
a)
a
b)
b
c)
c
d)
d
4.

What is the formula for Gravitational Potential Energy?

a)

PE = mgh

b)

KE = 1/2mv2

c)

W = Fd

d)

P = W/t

5.

What is the formula for Kinetic Energy?

a)

PE = mgh

b)

KE = 1/2mv2

c)

W = Fd

d)

P = W/t

6.

What is the KE of a football which has a mass of 0.8 kg and is kicked at a velocity of 10m/s?

a)

80 J

b)

3.2 J

c)

160 J

d)

40 J

7.

Malcolm's class has been assigned a project in which it is to build a four-wheeled vehicle to transport a soda can across the classroom. The car will be powered by stretching rubber bands around an axle before releasing the vehicle on the floor.

The vehicle will be powered by transforming _______ energy into _______ energy.

a)

mechanical; thermal

b)

thermal; mechanical

c)

elastic potential; kinetic

d)

kinetic; elastic potential

8.

Robin is swinging back and forth from a trapeze.

In which of the following situations is his kinetic energy being transformed into potential energy?

a)

when his speed is increasing and his height is decreasing

b)

when his height is not changing and his speed is zero

c)

when his height is increasing and his speed is decreasing

d)

when his height and speed are both equal to zero

9.

An asteroid is falling toward planet Earth from space. It has a height of 100,000 km.


As the asteroid falls closer to the Earth's surface, its _______ energy decreases and its _______ energy increases.

a)

chemical; heat

b)

kinetic; gravitational potential

c)

heat; chemical

d)

gravitational potential; kinetic

10.
Which of these is an example of light energy being transformed into chemical energy?
a)
A glow stick lights up when broken.
b)
Water heated by the sun evaporates.
c)
A plant makes sugar in the sunlight.
d)
A battery causes a buzzer to vibrate.
11.
Which type of energy transformation occurs when a flashlight shines?
a)
chemical → thermal → electrical
b)
chemical → electrical → light
c)
thermal → chemical → light
d)
chemical → electrical → chemical
12.
When water falls through a dam and turns a turbine connected to a generator, electricity is produced. This electricity is often used to light our homes and offices. Which of the following shows the energy transformations that occurs?
a)
electrical → light → mechanical
b)
chemical → mechanical → electrical
c)
mechanical → chemical → light
d)
mechanical → electrical → light
13.
A lamp that plugs into a wall socket draws energy which flows through a thin wire in the bulb causing it to glow. What energy transformations are taking place?
a)
chemical → light → electrical
b)
mechanical → sound → light
c)
thermal → solar → electrical
d)
electrical → thermal → light
14.
Which of the following best describes the energy transformations that occur when a flashlight that runs on batteries is turned on?
a)
chemical → light → electrical
b)
electrical → light → chemical
c)
light → electrical → chemical
d)
chemical → electrical → light
15.
Which of the following shows the correct order of the energy transformations that occur when green plants produce their food from the Sun’s energy?
a)
chemical → thermal
b)
light → chemical
c)
thermal → light
d)
chemical → electrical
16.
Which of the following shows the energy transformation that occurs when solar panels are used to heat a building?
a)
light → thermal
b)
chemical → electrical
c)
thermal → chemical
d)
light → mechanical
17.
Which device transforms electrical energy into mechanical energy?
a)
Flashlight
b)
Pencil Sharpener
c)
Lamp
d)
TV
18.
The diagram shows a circuit with the bulb glowing. How does the energy change as it moves from inside the battery, along the wires, and through the light bulb?
a)
electrical → light → chemical
b)
light → electrical → chemical
c)
chemical → electrical → light
d)
chemical → light → electrical
19.
Which of the following systems transforms chemical energy to light energy?
a)
Fan
b)
Lamp
c)
Compass
d)
Burning a candle
20.
Solar Energy is transferred to _____ Energy.
a)
Mechanical
b)
Solar
c)
Sound
d)
Electrical
21.
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
22.
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
23.
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
24.
Turning on a lamp is an example of energy transformation from electrical to 3 forms of energy. Which of these is NOT created by the lamp?
a)
radiant
b)
light
c)
heat
d)
chemical
25.
Which of the following energy transfers occurs when food is digested?
a)
chemical to mechanical
b)
radiant to nuclear
c)
mechanical to potential
d)
thermal to chemical
26.
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
27.
According to the Law of Conservation of Energy, energy cannot be _________ or ____________. 
a)
destroyed, destroyed
b)
created, saved
c)
created, destroyed
d)
lost, found
28.
The roller coaster cart has the most gravitational potential energy at position-
a)
W
b)
X
c)
Y
d)
Z
29.

Which type of heat transfer is shown?

a)

convection

b)

conduction

c)

radiation

d)

stir frying

30.

Which type of heat transfer is shown?

a)

convection

b)

conduction

c)

radiation

d)

ironing

31.

What type of heat transfer is shown?

a)

convection

b)

conduction

c)

radiation

d)

bonfire

32.

What type of heat transfer is shown here?

a)

convection

b)

conduction

c)

radiation

d)

boiling water

33.

If a door was left open between the bedroom (74 degrees) and the living room (68 degrees), what would likely happen to the temperatures after several hours?

a)

nothing, they would not change

b)

both rooms would become hotter 

c)

both room would become colder

d)

the bedroom temp. would lower and the living room temp. would rise

34.

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

35.

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

36.

Kinetic Energy is the energy of _________

a)

thermal

b)

movement

c)

potential

d)

atoms

37.

All matter is made up of atoms that are constantly moving

a)

True

b)

False

38.

Everything has thermal energy

a)

False

b)

True

39.
Specific heat is....
a)
The measure of kinetic energy of an objects particles
b)
A measure of the energy needed to increase the average kinetic energy of the particles
c)
The heating caused by the motion of flluid due to temperature difference
d)
The transfer of energy by electromagnetic radiation
40.
How does heat flow?
a)
Always from cold to warm
b)
Always from warm to cold
c)
Both warm to cold & cold to warm
d)
It depends on the temperature
41.
What unit do you use to measure Thermal Energy?
a)
J/Kg ºC
b)
Kg
c)
ºC
d)
J
42.
Copper, Stainless Steel, Carbon Steel, and Zinc were all heated using 10,000 JOULES of thermal energy.  What material would be have the LARGEST change in temperature?
a)
Copper
b)
Carbon Steel
c)
Zinc
d)
Stainless Steel
43.
A high specific heat means...
a)
It requires less energy to change temperature
b)
It requires more energy to change temperature
c)
It heats up very quickly
44.
Copper, Stainless Steel, Carbon Steel, and Zinc were all heated using 10,000 JOULES of thermal energy.  Based on the chart, which material would be have the SMALLEST change in temperature?
a)
Copper
b)
Carbon Steel
c)
Zinc
d)
Stainless Steel
45.
When a  piece of aluminum foil is taken out of the oven and cools from 100° C to 50°C, What is the change in temperature?
a)
50°
b)
0°
c)
100°
d)
150°
46.
The specific heat of aluminum is 0.21 cal/g°C.  How much heat(Q) is released when a 10 g piece of aluminum foil is taken out of the oven and cools from 100° to 50°?
a)
105 J
b)
10.5 J
c)
1.05 J
d)
50 J
47.
There are four cups of hot cocoa. The cup sizes are shown. The temperature of the cocoa in each cup is 25 degrees celsius. Which cup has the MOST thermal energy?
a)
Large cup (Trenta)
b)
Small cup (Tall)
c)
Venti
d)
All three are the same temperature so they have same thermal energy
48.
What would be the effect on the particles if more heat is supplied to the system?
a)
They would slow down
b)
They would stop moving
c)
They would speed up
d)
There would be no effect
49.

Particles in solids are ...

a)

Strongly attracted to one another.

b)

Moderately attracted to one another.

c)

Mildly attracted to one another.

d)

Not attracted to one another.

50.

When heat is applied to matter ...

a)

particles get closer and speed up.

b)

particles get closer and slow down.

c)

particles spread out and speed up.

d)

particles spread out and slow down.

51.

Particles in gases are ...

a)

Strongly attracted to one another.

b)

Moderately attracted to one another.

c)

Mildly attracted to one another.

d)

Not attracted to one another.

52.

Particles in liquids are ...

a)

Strongly attracted to one another.

b)

Moderately attracted to one another.

c)

Mildly attracted to one another.

d)

Not attracted to one another.

53.

Which state of matter has:


No fixed volume or shape and particles that move rapidly

a)

Solid

b)

Liquid

c)

Gas

d)

Plasma

54.
Hot coffee is stirred with a spoon; the spoon gets hot due to
a)
conduction
b)
convection
c)
radiation
55.
The type of heat transfer that happens through direct contact of molecules or particles with each other is ___________________.
a)
Convection
b)
Conduction
c)
Radiation
d)
insulation.
56.
The kind of heat transfer that travels through space in electromagnetic waves is ______________________.
a)
insulation.
b)
Radiation
c)
Conduction
d)
Convection
57.
The candle will slowly heat the metal and transfer the heat directly to the mans hand.
a)
conduction
b)
convection
c)
radiation

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