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WorksheetsEnergy and Heat Transfer
Total questions: 23
Worksheet time: 15mins
Name
Class
Date
1.
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.
2.
People get energy from the food that they eat and transform that energy as they move. Which energy transformations occur as a student rapidly rubs the palms of his hands together?
a)
mechanical to thermal to electrical
b)
chemical to mechanical to thermal
c)
mechanical to chemical to sound
d)
chemical to sound to electrical
3.
28 °C = __?__ K
a)
301
b)
245
c)
401
d)
345
4.
-123 °C = __?__ K
a)
150
b)
396
c)
496
d)
250
5.
400 K = __?__ °C
a)
773
b)
673
c)
227
d)
127
6.
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
7.
At THE FREEZING POINT, the particles in an object have no kinetic energy.
a)
True
b)
False
8.
The movement of liquid in a lava lamp
a)
Conduction
b)
Convection
c)
Radiation
9.
A metal spoon heating up in a bowl of hot soup
a)
Conduction
b)
Convection
c)
Radiation
10.
A material that conducts heat poorly is called a(n)
a)
insulator.
b)
conductor.
c)
metal.
d)
radiator.
11.
The more particles an object has at a given temperature...
a)
the higher its temperature.
b)
the more thermal energy it has.
c)
the more degrees it has.
d)
the more kelvins it has.
12.
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 of a molecule doesn't affect its temperature
13.
The transfer of energy as heat through a material.
a)
Thermal Conduction
b)
Convection
c)
Radiation
d)
Convection Current
14.
The temperature at which molecular energy is at a minimum (0 K on the Kelvin scale or -273.16 C) on the Celsius scale.
a)
Specific Heat
b)
Plasma
c)
Absolute Zero
d)
Conduction
15.
The energy transferred between objects that are at different temperatures.
a)
Radiation
b)
Convection
c)
Thermal Conduction
d)
Heat
16.
The vertical movement of air currents due to temperature variations.
a)
Conduction
b)
Convection Current
c)
Radiation
d)
Heat
17.
Water freezes at ______ on the Celsius scale?
a)
30
b)
35
c)
5
d)
0
18.
A measure of how hot or cold something is , specifically a measure of the average kinetic energy of the particles in an object.
a)
Thermometer
b)
Temperature
c)
Absolute Zero
d)
Specific Heat
19.
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
20.
What kind of bond is between Lithium and Oxygen?
a)
ionic
b)
covalent
21.
What kind of bond forms between Carbon and Chlorine?
a)
ionic
b)
covalent
22.
If a rock has a mass of 25 grams and a volume of 5 cm3, it has a density of....
a)
30 g/cm3
b)
20 g/cm3
c)
125 g/cm3
d)
5 g/cm3
23.
Phosphorus has _________ valence electrons.
a)
5
b)
4
c)
2
d)
6
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