NEW
Font size
S
M
L
XL
WorksheetsReview for Unit 6 Heat Test
Total questions: 37
Worksheet time: 1hrs 20mins
Name
Class
Date
1.
What is a conductor?
a)
a material that heat moves through easily
b)
a material that heat does not move through easily
c)
a material that turns cold when heated
d)
a tool for measuring temperature
2.
What is an insulator?
a)
a material that heat moves through easily
b)
a material that heat does not move through easily
c)
a material that turns cold when heated
d)
a tool for measuring temperature
3.
Which of these is a better conductor?
a)
b)
4.
Which of these is a better insulator?
a)
b)
5.
Which of these is a measure of how hot or cold something is?
a)
temperature
b)
radiation
c)
insulation
d)
friction
6.
The tool used to measure temperature is called a/an
a)
insulator
b)
conductor
c)
thermometer
d)
radiation
7.
What temperature is shown on the thermometer?
a)
24°F
b)
24°C
c)
20°F
d)
30°C
8.
Can heat be created or destroyed?
a)
Yes
b)
No
c)
Only when things are cooling off
d)
Only when things are warming up
9.
When things are hot molecules are moving...
a)
Fast
b)
Slow
c)
They are not moving
d)
They are moving by not fast or slow
10.
When things are cold molecules are moving...
a)
Fast
b)
Slow
c)
They are not moving
d)
They are moving by not fast or slow
11.
Everything has heat
a)
True
b)
False
12.
Heat and Temperature are the same thing
a)
True
b)
False
13.
Heat passes from...
a)
High to low
b)
Cold to hot
c)
Hot to cold
d)
Heat cannot be passed
14.
Why do objects cool down?
a)
All heat will slowly be destroyed.
b)
The cold attacks the heat.
c)
Heat is always transferring so the heat will always move to a cooler place.
d)
The heat disappears.
15.
What is the formula to calculate heat energy required to raise the temperature of any substance?
a)
Q = m Cp ∆T
b)
Q = m Cp
c)
Q = ½ m v
d)
m = Q Cp
16.
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
17.
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
18.
A sample of iron receives 50.J of heat energy that raises the temperature of the iron 25.0°C. If iron has a specific heat of 0.10 J/g°C, what is the mass of the iron sample?
a)
25 g
b)
30 g
c)
20 g
d)
50 g
19.
The specific heat is the amount of energy needed to raise the temperature one degree Celsius of 1 gram of a substance.
a)
True
b)
False
20.
The specific heat(c) of copper is 0.39 J/g °C. What is the temperature change(∆t) when 100 Joules of heat(Q) is added to 20 grams?
a)
12.82 °C
b)
24.12°C
c)
351 °C
21.
What is the symbol for Thermal Energy?
a)
Q
b)
T
c)
m
d)
Cp
22.
What unit do you use to measure Thermal Energy?
a)
J/Kg ºC
b)
Kg
c)
ºC
d)
J
23.
A high specific heat means...
a)
It heats up quickly with energy added
b)
It requires more energy to change temperature
24.
If I heat up 2 pans of water one has 100 mL in it and one has 1000mL. Which one heats up the fastest?
a)
100 mL
b)
1000 mL
c)
They both heat up at the same speed
d)
They cool down.
25.
You have 20 g of water with specific heat of 4.18 J/g°C. The temperature changes from 25° C to 20° C. How much heat energy (Q) moves from the water to the surroundings?
a)
418 Joules
b)
209 J
c)
83 J
d)
4.18 J
26.
All matter is made of _____ that are constanly moving.
a)
insulators
b)
particles
c)
convection
d)
pieces of plastic
27.
The symbol for specific heat is .......
a)
c
b)
Q
c)
m
d)
t
28.
What is the formula to calculate heat energy required to raise the temperature of any substance?
a)
Q=mc∆t
b)
Q=mc
c)
Q= ½mv
d)
m=QC
29.
For a skillet, used for cooking, do you want a high or low specific heat
a)
High, so that it will need more energy to heat up
b)
Low, so that it will change temperature quickly
30.
A hot marble is dropped into a container of cool water. Which of the following statements most accurately describes the molecular motion of molecules.
a)
Both the marble molecules and the water molecules will slow down until they eventually come to rest.
b)
The marble molecules will slow down while the water molecules speed up until they reach reach the same average kinetic energy.
c)
The marble molecules will speed up while the water molecules will slow down until they reach nearly identical speeds.
d)
Both the marble molecules and the water molecules will speed up until they reach nearly identical speeds.
31.
Which of the following best describes absolute zero?
a)
The temperature at which water is at its triple point
b)
The temperature at which the molecules of a substance have maximum kinetic energy
c)
The temperature at which water freezes at standard pressure
d)
The temperature at which the molecules of a substance have minimum kinetic energy
32.
As the temperature of a gas in an enclosed container increases, the pressure of the gas also increases. This is because ―
a)
as it gets hot, the container expands
b)
the kinetic energy of the gas particles increases, and they hit the container walls with greater speed
c)
the temperature increases the gravitational potential energy of the gas
d)
the temperature increases the gravitational potential energy of the gas
33.
As the temperature of a confined gas rises, which of the following characteristics of the gas molecules increases?
a)
Size
b)
Number
c)
Density
d)
Average speed
34.
Copper, Stainless Steel, Carbon Steel, and Zinc were all heated using the same thermal energy. What material would be the coolest after being heated?
a)
Copper
b)
Carbon Steel
c)
Zinc
d)
Stainless Steel
35.
A material was cooled from 100ºC to 40ºC. What is the temperature change?
a)
60ºC
b)
40ºC
c)
-60ºC
d)
-40ºC
36.
Exothermic reactions are reactions that
a)
release heat
b)
absorb heat
c)
do not involve heat
d)
take place instantly
37.
Endothermic reactions are ones that
a)
absorb heat
b)
release heat
c)
do not involve heat
d)
take place instantly
Reset
