WorksheetsEnergy Unit (Thermal) Review
Total questions: 30
Worksheet time: 15mins
Name
Class
Date
1.
A child is jumping up and down on a trampoline. At what point does the child have the most gravitational potential energy?
a)
at the top of the jump
b)
when the child is falling
c)
at the bottom of the jump
d)
when the child is rising
2.
Which describes how the total amount of energy changes during the energy transformation of burning a gallon of gasoline?
a)
energy before it is burned is less than the energy after it is burned
b)
the energy before it is burned is greater than the energy after it is burned
c)
the energy after it is burned is equal to the energy before it is burned
d)
the energy after it is burned is not related to the energy before it is burned
3.
Which vehicle has the most kinetic energy if both are traveling at the same speed?
a)
the motorcycle
b)
the truck
c)
both have the same kinetic energy
d)
some amount of energy cannot be accounted for
4.
A change from one form of energy into
a)
gravitational potential energy
b)
work
c)
conservation of energy
d)
energy transformation
5.
Two objects with different masses are placed on the same shelf. Which object contains more energy?
a)
The object with a greater mass has more energy.
b)
The object with less mass has more energy.
c)
Both objects have the same amount of energy.
d)
Neither object has any energy because they are not moving.
6.
If you place your hand on a hot surface and it feels very hot, it means that heat is flowing _______.
a)
nowhere; heat is staying still
b)
in circles around your hand
c)
from your hand to the surface
d)
from the surface to your hand
7.
Which of the following has the MOST thermal energy?
a)
1 liter pot of boiling water
b)
a swimming pool on a sunny day
c)
the entire atmosphere of Earth
d)
a full size candy bar that is melting
8.
When you walk outside on a sunny day and feel the warmth from the sun, the type of heat transfer you are experiencing is __________.
a)
thermal
b)
conduction
c)
convection
d)
radiation
9.
If two objects or containers have the same temperature, ____________.
a)
they have the same average kinetic energy.
b)
they have equal thermal energies
c)
will change temperatures at the same rate
10.
If two objects or containers have the same temperature, but one has a larger mass, ____________.
a)
the larger mass object has more thermal energy
b)
the smaller mass object has more thermal energy
c)
they have the same thermal energy
d)
they will change temperatures at the same rate
11.
A copper rod connects two insulated beakers that contain liquids. The temperature of the liquid in Beaker A is 85°C and the temperature in Beaker B is 15°C. Over the next 60 seconds, what will occur?
a)
The temperature in Beaker A will decrease and the temperature in Beaker B will stay the same.
b)
The temperature in Beaker A will decrease and the temperature in Beaker B will increase.
c)
Both of the temperatures will remain the same.
d)
It is impossible to tell without more information.
12.
The two insulated beakers shown contain equal amounts of identical liquids. The temperature of Beaker A is 80°C. The temperature of Beaker B is 50°C. A copper rod connects the beakers. The system is then left alone for several hours. What would you expect to find when the system is examined after this time?
a)
The temperature of Beaker A would be 50°C and the temperature of Beaker B would be 80°C.
b)
The temperatures of the two beakers would be unchanged.
c)
Both of the beakers would be at a temperature of 50°C.
d)
Both of the beakers would be at a temperature of 65°C.
13.
In which state does water have the lowest average kinetic energy?
a)
Solid
b)
Liquid
c)
Gas
d)
Plasma
14.
The transfer of thermal energy by direct contact, from one molecule to another is called _________.
a)
convection
b)
conduction
c)
radiation
d)
thermal
15.
The transfer of energy through the movement of molecules in a gas or a liquid is ___________.
a)
convection
b)
conduction
c)
radiation
d)
plasma
16.
When we touch the desk, it feels cold to our hand. This is because ______________.
a)
heat is flowing from the desk into our hand
b)
cold is flowing from the desk into our hand
c)
heat is flowing from our hand to the desk
d)
cold is flowing from our hand to the desk
17.
At which point does the roller coaster have the maximum potential energy?
a)
w
b)
x
c)
y
d)
z
18.
At what point does the roller coaster have the maximum kinetic energy?
a)
w
b)
x
c)
y
d)
z
19.
A roller coaster is a designed system, and it begins with a lot of potential energy. At the end, the roller coaster has less energy. Where did the potential energy go?
a)
Energy transformed to kinetic energy
b)
Energy was transformed to sound energy
c)
Energy was transformed to heat energy
d)
All of these
20.
In a building warm air rises to the attic while cool, more dense air sinks to the basement. This is an example of ______________.
a)
convection
b)
conduction
c)
radiation
d)
thermal
21.
Convection currents can be found _________.
a)
in the Earth's mantle
b)
in a pot of boiling water
c)
in the atmosphere
d)
all of these
22.
Heat flows in only one direction: It always moves __________________.
a)
From warm areas to cooler areas
b)
from cool areas to warmer areas
c)
in circles
d)
north
23.
When heat flows from one substance to another, what happens to the temperature of the substance giving off heat?
a)
increases
b)
decreases
c)
stays the same
24.
Many pots and pans are made of metal because metals are excellent ____________.
a)
conductors
b)
insulators
c)
elements
d)
regulators
25.
Many metal pots and pans have a handle made of a different material to keep users from getting burned. The handle material is a(n) _____________.
a)
insulator
b)
conductor
c)
element
d)
regulator
26.
In which state of matter do molecules have the highest average kinetic energy?
a)
solid
b)
liquid
c)
gas
27.
A thermometer is placed on a table, and a second is placed inside a mitten. After one hour, what is the outcome?
a)
The thermometer inside the mitten will have a lower temperature reading.
b)
The thermometer inside the mitten will have a higher temperature reading.
c)
Both thermometers will have the same temperature reading.
28.
A bowl of ice sits in the sun. Which statement is true?
a)
The ice has no energy because of its temperature.
b)
The only energy from the ice comes from the sun shining on it.
c)
Cold water from the melted ice cubes has more energy than ice.
d)
Water freezes to ice at absolute zero.
29.
A benefit of insulating in a home is ______________.
a)
it keeps you comfortable
b)
it saves your family money
c)
it reduces the amount of natural resources used (natural gas, electricity) to heat and cool a home
d)
all of these
30.
Jessica filled 2 beakers half-full of water. The water on the left is 50 degrees C, and the water on the right is 30 degrees C. She poured them into a large beaker and stirred. What was the temperature of the combined water?
a)
20 degrees Celcius
b)
30 degrees Celcius
c)
40 degrees Celcius
d)
50 degrees Celcius
100 %
