1. 1 Container Initial Temperature Final Temperature A B C D 2 3 4
Thermal Energy
Force, Motion, and Energy 1
Four containers made of different materials, each containing water at 45º C, were set out on a table. The initial temperature of the water was recorded. The temperature of the water was also recorded 15 minutes later.
Which container was the most effective at preventing heat transfer from the water to the environment? A
Container A B
Container B C
Container C D
Container D
Container
Initial Temperature
Final Temperature A
45°C
28°C B
14°C C
23°C D
9°C
6.9AB 2
Thermal energy always moves from – A
large objects to small objects. B
dark objects to light objects. C
warm objects to cool objects. D
smooth objects to rough objects. 3
Which of the following is an example of heat transfer by conduction? A
Sunlight warming a room early in the morning. B
A metal spoon getting hot in a bowl of soup. C
Warm and cold water circulating in an ocean. D
Hot air rising and cold air sinking on a beach. 4
A student notices that the saucer below a coffee cup becomes warmer after coffee is poured into the cup. Energy was transferred from – A
the cup to the saucer by conduction. B
the saucer to the cup by conduction. C
the cup to the saucer by convection. D
the saucer to the cup by convection.

2. Temperatures of Liquids After 10 Minutes (oC)
Thermal Energy
Force, Motion, and Energy 5
Which of the following is an example of heat transfer through radiation? A
A pot of soup warming on a hot burner. B
A crayon melting on a hot sidewalk. C
Beach sand getting warmed by the Sun. D
An egg getting cooked in a pot of boiling water. 6
Look at the table provided.
Water at 40º C was placed into containers made of four different materials. An initial temperature was taken, and a final temperature was taken after 10 minutes.
How much did the temperature change during the experiment for the container that allowed the most transfer of thermal energy? Bubble your answer below in oC.
Temperatures of Liquids After 10 Minutes (oC)
Temperature
Wood
Metal
Paper
Plastic
Initial 40
Final 32 18 30 28 7
While seated next to a camp fire, a person begins to feel the warmth of the fire. Energy is transferred from – A
the fire to the person by conduction. B
the person to the fire by conduction. C
the fire to the person by radiation. D
the person to the fire by radiation.

3. Electrical to chemical
Energy Transformations
Force, Motion, and Energy 1
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 2
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.
6.9C 3
What energy transformations take place when a battery-operated radio is in use? A
Electrical to chemical to light B
Sound to chemical to mechanical C
Chemical to electrical to sound D
Light to electrical to thermal 4
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  thermal  electrical B
Chemical  mechanical  thermal C
Mechanical  chemical  sound D
Chemical  sound  electrical 5
Which of the following devices transforms electrical energy into mechanical energy A
B C D

4. This circuit works by transforming –
Energy Transformations
Force, Motion, and Energy 6
The diagram shows a complete circuit with a battery and a buzzer making noise.
This circuit works by transforming – A
chemical energy to electrical to sound. B
electrical energy to thermal to light. C
sound energy to electrical to chemical. D
mechanical energy to electrical to sound. 7
A television works by transforming electrical energy into what other kinds of energy? A
Light, thermal, and sound B
Thermal, chemical, and solar C
Sound, mechanical, and electrical D
Light, chemical, and mechanical
6.7AB: Energy Sources
Matter and Energy 1
As a renewable resource, hydroelectricity is generating more attention as environmental concerns rise. What is one advantage of using this as an energy source? Hydroelectric energy – A
reservoirs can be used for irrigation of crops. B
may divert water and alter normal water flow. C
might disrupt the movements of migrating salmon. D
sometimes causes flooding in surrounding areas.

5. 6.7AB: Energy Sources
Matter and Energy 2
One disadvantage to using coal to produce electricity is that coal - A
forms in a short amount of time. B
is abundant over a wide area. C
is not environmentally friendly. D
is relatively quite affordable. 3
Natural gas is a fossil fuel formed within oil fields and coal beds. What is an advantage of using natural gas as an alternative form of energy? A
It releases relatively low emissions compared to other fossil fuels B
The stored energy is less concentrated, so more needs to be burned C
There is a limited supply since it is a non-renewable resource D
It tends to be more expensive compared to other fossil fuels 4
A student was asked to give the disadvantages of using biomass as an energy source and stated that there are no disadvantages. Which of the following best evaluates the response of the student? A
Incorrect, because biomass is available almost everywhere since it a byproduct B
Correct, because biomass is a renewable fuel source if the biomass is harnessed properly C
Incorrect, because biomass is a less concentrated form of energy, making it inefficient D
Correct, because the amount of harmful emissions released is less than other fuel sources 5
A table of typical energy consumption is provided.
What is the most significant way to decrease energy consumption in a household according to the graph provided? A
Turn off computers and other electronics when they are not in use B
Increase the temperature of a house in warm months, and decrease it in cool months C
Turn off lighting that is not necessary, or when the household is empty D
Keep the refrigerator door closed as much as possible to avoid letting cold air out 5

6. 6.7AB: Energy Sources
Matter and Energy 1
Although hydroelectricity is the least expensive energy source used to generate electricity, most utility companies in the United States do not use this form of energy because - A
hydro-plants tend to last longer than plants powered by fossil fuels. B
hydroelectricity causes more pollution, due to the emission of greenhouse gases. C
hydro-plants are expensive to construct and need expensive machinery. D
reservoirs associated with dams can be used for irrigation as well as recreation. 2
An advantage of burning coal to generate power for electricity is that coal is - A
relatively inexpensive to mine and transport. B
available in a limited supply. C
found in few places in the United States. D
harmful for the environment. 3
Why is it better to obtain energy from natural gas instead of coal and oil? Natural gas – A
produces fewer greenhouse gases. B
is a renewable energy source. C
is not a natural resource. D
produces more toxic waste. 4
What do geothermal and solar energy have in common? A
Sunlight is needed for both to generate energy B
Both of these energy resources are non-renewable C
Neither resource produces greenhouse gases D
Neither requires expensive machinery to produce power 6

7. 7 5 Look at the graph provided.
6.7AB: Energy Sources
Matter and Energy 5
Look at the graph provided.
What percent of the total energy used in the United States in 2009 came from fossil fuels? Record and bubble in your answer in the grid provided.
Petroleum
37%
Natural Gas
25%
Coal
21%
Renewable Energy 8%
Nuclear Power 9%
Sources of Energy Consumption in the United States during the year 2009 6
What is a major disadvantage of using nuclear power to generate electricity? A
A small amount of power is produced B
No greenhouse gases are produced C
The power plants are inexpensive to build D
The by-product of nuclear power is radiation 7
How does conserving and recycling paper help manage energy resources? A
Paper can be burned in order to produce additional energy B
Making paper requires energy and uses up natural resources C
Recycling paper increases the amount of waste in landfills D
Using less paper means more trees can be used as an energy resource 7