WorksheetsHeat, Electricity, and Magnetism
Total questions: 32
Worksheet time: 16mins
Name
Class
Date
1.
Which of the following is a prediction?
a)
The water heated through radiation.
b)
The water will heat through convection.
c)
The water is cold.
d)
The water boiled at 100 degrees Celsius.
2.
Which of the following is an inference?
a)
The soil felt warm because it had a higher temperature than the water.
b)
The temperature of the soil rose 10 degrees.
c)
The water will not heat as quickly as the soil.
d)
If soil and water are placed in direct sunlight, then the soil will absorb heat more quickly than the water.
3.
Which type of heat transfer occurs when heat travels as the result of uneven heating of air or water?
a)
conduction
b)
convection
c)
radiation
4.
How does heat move?
a)
from warm objects to cooler ones
b)
from cooler objects to warmer ones
5.
Which type of heat transfer occurs when a baseboard heater warms a room?
a)
conduction
b)
convection
c)
radiation
6.
Radiation _____.
a)
heats the space in between objects
b)
involves only solids
c)
does not heat the space between objects
d)
occurs only in liquids and gases
7.
Why is a hat a good insulator?
a)
It slows the transfer of heat away from your head.
b)
It prevents the coldness from being transferred to your head.
c)
It produces heat to keep you warm.
d)
It sets up convection within its particles.
8.
Which statement best explains convection currents?
a)
a warm gas like air or a warm liquid like water will sink under a cooler gas or liquid
b)
a warm gas like air or a warm liquid like water will sink under a cooler gas or liquid
c)
a cool gas will sink under a cooler solid
d)
a warm gas or liquid will rise over a cool gas or liquid
9.
Cooking eggs in a frying pan is an example of _________.
a)
conduction
b)
convection
c)
radiation
10.
The Sun transfers heat energy by _________.
a)
conduction
b)
convection
c)
radiation
11.
What happens if the electricity to an electromagnet stops?
a)
The magnetism stops.
b)
The magnetism increases.
c)
The magnetism isn't affected.
12.
A _______ has an electrical current flowing through a coil of wire that is wrapped around an iron core to produce motion.
a)
generator
b)
electromagnet
c)
turbine
d)
motor
13.
Which of the following is a quantitative observation?
a)
The magnet held 20 paper clips.
b)
The magnet is stronger because it has more coils.
c)
The magnet will go off.
d)
He likes to play with electricity.
14.
Mechanical energy is transformed into electrical energy in which device?
a)
electromagnet
b)
motor
c)
generator
15.
flow of an electrical charge through a wire
a)
discharge
b)
electric current
c)
open circuit
d)
parallel circuit
16.
a complete pathway that an electric current flows through
a)
motor
b)
circuit
c)
radiation
d)
discharge
17.
a motor will stop working if it does not have a source of _________
a)
electrical energy
b)
solar energy
c)
chemical energy
d)
coils of wire
18.
When two magnets are pulled together or pushed apart without touching, what force causes this?
a)
magnetic field
b)
mechanical energy
c)
kinetic energy
d)
solar energy
19.
transforms energy from the Sun into electrical energy
a)
solar cell
b)
electromagnet
c)
generator
d)
turbine
20.
A magnet spinning around a coil of wire forms _______.
a)
chemical energy in the wire
b)
solar energy in the wire
c)
an electric current in the wire
d)
a magnet
21.
Mechanical energy in an electric motor is produced by an electromagnet that is connected to _________.
a)
a source of electric current
b)
a magnetic field
c)
a coil of copper wire
d)
a conductor
22.
Which of the following should you add to an electric circuit to produce mechanical motion?
a)
a light bulb
b)
a fan
c)
a radio
d)
a heater
23.
Which type of energy transfer occurs in a motor?
a)
chemical energy to mechanical energy
b)
mechanical energy to electrical energy
c)
light energy to electrical energy
d)
electrical energy to mechanical energy
24.
the transfer of thermal energy between two objects in contact with each other
a)
conduction
b)
convection
c)
radiation
25.
like poles of magnets
a)
attract
b)
repel
26.
Which circuit is a closed circuit?
a)
1
b)
2
27.
Which circuit is an open circuit?
a)
1
b)
2
28.
What is this device?
a)
electromagnet
b)
motor
c)
generator
29.
What is this device?
a)
electromagnet
b)
motor
c)
generator
30.
What energy transfer occurs in this device (not the light bulb)?
a)
mechanical energy to electrical energy
b)
electrical energy to mechanical energy
c)
light energy to mechanical energy
31.
What is this device?
a)
electromagnet
b)
motor
c)
generator
32.
What energy transfer occurs in this device (not the fan)?
a)
mechanical energy to electrical energy
b)
mechanical energy to light energy
c)
electrical energy to mechanical energy
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