WorksheetsThermal Energy, Heat & Temperature
Total questions: 20
Worksheet time: 1hrs 6mins
Name
Class
Date
1.
A measure of the average kinetic energy of the individual particles in an object is called:
a)
thermal energy
b)
conduction
c)
convection
d)
temperature
2.
When you touch something that feels cold,
a)
heat from your hand moves into the cold substance.
b)
coldness moves from the cold substance into your hand.
c)
it melts.
d)
it freezes.
3.
Energy that moves particles of matter is
a)
temperature
b)
thermal energy
c)
heat
d)
friction
4.
The temperature of a substance increases as___.
a)
the substance expands
b)
the average kinetic energy of its particles increases
c)
the substance's volume increases
d)
the substance's mass increases
5.
You're holding hands with your best friend. Your friend's hands are REALLY warm and yours are really cold. After a few minutes, this has changed. How might you explain what happened?
a)
The cold energy from your hand transferred to your friend's hand through conduction.
b)
The heat energy from your friend's hand transferred to your hand through conduction.
c)
The cold energy from your hand transferred to your friend's hand through convection.
d)
The heat energy from your friend's hand transferred to your hand through convection.
6.
When a popsicle melts, the particles in the popsicle _____.
a)
gain thermal energy and speed up
b)
there are no particles in popsicles
c)
lose thermal energy and slow down
d)
stay the same
7.
Observe the diagram. Which statement is true about the kinetic energy of the molecules in the containers?
a)
The molecules are moving faster in Diagram A
b)
The molecules are moving slower in Diagram A
c)
The molecules are moving at the same rate in both diagrams
8.
The more particles an object has at a given temperature,
a)
the higher the temperature
b)
the more thermal energy it has
c)
the more degrees it has
d)
the more Kelvins it has
9.
what is specific heat
a)
Bakers mixtape
b)
a basketball team
c)
The amount of thermal energy required to increase the temperature of 1kg of a material by 1° Celsius.
10.
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
11.
What unit do you use to measure Thermal Energy?
a)
J/Kg ºC
b)
Kg
c)
ºC
d)
J
12.
If the particles in an object have more kinetic energy, what must be true?
a)
The object's temperature is lower
b)
The object's temperature is higher
c)
The object moves faster
d)
The object is heavier
13.
Temperature____ as average kinetic energy decreases.
a)
increases
b)
decreases
c)
stays the same
d)
all of the above
14.
The total kinetic energy of a substance's particles
a)
thermal energy
b)
heat
c)
convection
d)
conduction
15.
The energy transferred between object's at different temperatures
a)
heat
b)
thermal energy
c)
radiation
d)
convection
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)
Medium cup (Venti)
d)
All three are the same temperature so they have the same thermal energy
17.
The specific heat of aluminum is 0.21 cal/g°C. How much heat(Q) is released when a 10 g piece of aluminum foil is taken out of the oven and cools from 100° to 50°?
a)
105 J
b)
10.5 J
c)
1.05 J
d)
50 J
18.
20 g of water. specific heat of water is 4.18 J/g°C. 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
19.
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 of copper?
a)
12.82 °C
b)
24.12°C
c)
351 °C
20.
A 15.75-g piece of iron absorbs 1086.75 joules of heat energy, and its temperature changes from 25°C to 175°C. Calculate the specific heat capacity of iron.
a)
0.46 J/goC
b)
1.654 J/goC
c)
2,567,446.875 J/goC
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