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WorksheetsPhysics Thermal physics 1
Total questions: 20
Worksheet time: 20mins
Name
Class
Date
1.
True or false: Heat moves from the cooler object to a warmer object
a)
True
b)
False
2.
If two objects have different temperatures, heat will flow from the warmer object to the cooler one UNTIL ____________
a)
one reaches a temperature of zero
b)
they both have an equal temperature
c)
one runs out of energy
3.
All atoms are vibrating, hot atoms have more energy. When hot atoms bump into cold atoms they transfer energy.
a)
True
b)
False
4.
Heat always transfers from hot to cold.
a)
True
b)
False
5.
The transfer of thermal energy between objects of different temperatures is called...
a)
temperature
b)
heat
c)
internal energy
d)
none of these
6.
True/False: when two substances reach the same temperature they are in thermal equilibrium.
a)
True
b)
False
7.
Temperature is a measure of the...
a)
total energy in a substance
b)
total kinetic energy in a substance
c)
average potential energy in a substance
d)
average kinetic energy of molecules in a substance
8.
Freezing occurs when matter changes from a...
a)
gas to a solid
b)
solid to a gas
c)
liquid to a gas
d)
liquid to a solid
9.
High temperature is connected to:
a)
Low kinetic energy.
b)
High kinetic energy.
c)
Zero net energy.
d)
Equal kinetic energies.
10.
What letter represents heat?
a)
S
b)
C
c)
T
d)
Q
11.
What is 0oC in Kelvin?
a)
110 K
b)
100 K
c)
273 K
d)
210 K
12.
How much heat is absorbed when 355g of water goes from 25-45 degrees Celsius? The specific heat of water is 4180 J/kg.K
a)
21945 J
b)
21945 g
c)
29678 J
d)
29678 g
13.
A 300g piece of aluminum at 100 oC is placed in a 150g of H2O at 200 oC. The final temp. of the mix is 35 oC. What is the specific heat of the aluminum if the specific heat of the water is 4180 J/kgK?
a)
22415 J
b)
22415 g
c)
32415 J
d)
32415 g
14.
Which cools at a faster rate, a pot of boiling water left at room temperature or a same-sized pot of warm water left at room temperature?
a)
boiling water
b)
warm water
c)
both cool at an equal rate
15.
Polystyrene is a good heat...
a)
emitter
b)
absorber
c)
conductor
d)
insulator
16.
Which has the higher specific heat capacity, water or sand?
a)
water
b)
sand
c)
they are both equal
17.
To convert from Celsius to Kelvin:
K = Degrees Celsius + __________
K = Degrees Celsius + __________
a)
251 K
b)
275 K
c)
213 K
d)
273 K
18.
Recall the equation to calculate the change in heat (Thermal Energy) of an equation:
∆Q = mc∆T
If
∆Q = 100 J
m = 10 g
∆T = 2 °C
What is c (in J/kgK) ?
∆Q = mc∆T
If
∆Q = 100 J
m = 10 g
∆T = 2 °C
What is c (in J/kgK) ?
a)
20
b)
5
c)
25
d)
200
19.
12 kilograms = ___ grams
a)
1000
b)
12000
c)
12
d)
120
20.
The following number in scientific notation is
0.0005621 = _____
0.0005621 = _____
a)
5.621 x 104
b)
5.621 x 10-5
c)
5.621 x 10-4
d)
56.21 x 102
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