WorksheetsUnit 4 Reassessment
Total questions: 15
Worksheet time: 14mins
Name
Class
Date
1.
After cooking an egg in boiling water, you cool the egg by putting it into a bowl of cold water. Which of the following explains the egg's cooling process?
a)
Temperature is transferred from the egg to the water.
b)
Energy is transferred from the water to the egg.
c)
Energy is transferred from the egg to the water.
d)
Cold moves from the water into the egg.
2.
As water in a freezer turns into ice,
a)
the water absorbs energy from the air in the freezer.
b)
the water absorbs the coldness from the air in the freezer.
c)
the freezer air absorbs heat from the water.
d)
the water neither absorbs nor releases energy.
3.
What kind of energy is represented in the picture?
a)
Thermal
b)
Chemical
c)
Sound
d)
Nuclear
4.
What do we call a change from one form of energy to another?
a)
Energy change
b)
Energy transformation
c)
Energy creation
5.
According to the Law of Conservation of Energy, energy cannot be _________ or ____________.
a)
destroyed, destroyed
b)
created, saved
c)
created, destroyed
d)
lost, found
6.
Mechanical energy
a)
energy built up before being in motion
b)
energy released in a chemical reaction
c)
energy of motion
d)
sum of kinetic and potential energy
7.
Which energy conversion is taking place when you put gasoline in a car?
a)
thermal -> electrical
b)
mechanical -> electrical
c)
chemical -> mechanical
d)
mechanical -> electromagnetic
8.
what type of energy is stored in a battery?
a)
electrical
b)
chemical
c)
thermal
d)
mechanical
9.
Which of the following best describes the energy transformations that occur when a flashlight that runs on batteries is turned on?
a)
chemical to mechanical to electrical to radiant
b)
radiant to electrical to sound
c)
chemical to radiant to mechanical to electrical
d)
electric to radiant to chemical
10.
When an electric circuit is connected to a fan, what would the energy transformation be?
a)
Electrical to chemical
b)
Chemical to sound
c)
Electrical to mechanical
d)
Chemical to thermal
11.
The kind of heat transfer that travels through space in electromagnetic waves is ______________________.
a)
insulation.
b)
Radiation
c)
Conduction
d)
Convection
12.
In heat transfer, heat always flows from the _______________ substance to the _______________ substance.
a)
Hotter to colder
b)
Colder to hotter
c)
Hotter to hotter
d)
Colder to colder
13.
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.
14.
___________________ is the type of heat transfer that occurs in fluids, such as warm air rising and cold air sinking; creating wind.
a)
Convection
b)
Conduction
c)
Radiation
d)
insulation.
15.
Which statement is true?
a)
The quicker a molecule moves, the colder it is.
b)
The slower a molecule moves, the warmer it is.
c)
The quicker a molecule moves, the warmer it is
d)
The movement on molecule don�t affect its temperature
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