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The graph below shows the temperatures, taken at one-minute intervals, once a newly made 400˚C metal horseshoe was dropped into a pail of water. The water had an initial temperature of 20oC. Use the graph to answer any questions that follow.

If no outside sources, such as the temperature of the air or pail, affect the energy transferred between the horseshoe and water, then, based on the graph, the –

• A. temperature of the water and horseshoe stop changing at approximately 29°C.

• B. final temperature of the horseshoe will be 400˚C.

• C. temperature of the water and horseshoe stop changing at approximately 20°C.

• D. final temperature of the horseshoe will be 20°C

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

The graph below shows the temperatures, taken at one-minute intervals, once a newly made 400˚C metal horseshoe was dropped into a pail of water. The water had an initial temperature of 20oC. Use the graph to answer any questions that follow.

Assuming the surrounding environment had no effect on the transfer of thermal energy, when the horseshoe was put into the water, thermal energy moved from the -

• horseshoe to the water, until the horseshoe reached the starting temperature of the water.

• water to the horseshoe, until they both reached the same temperature

• horseshoe to the water, until they both reached the same temperature.

• water to the horseshoe, until the water reached the starting temperature of the horseshoe

Tags

NGSS.MS-PS1-4

Which type of thermal energy transfer exists when your doctor takes an x-ray of your body?

• Conduction

• Convection

• Radiation

• none of the above

Tags

NGSS.HS-PS3-4

NGSS.HS-PS4-3

The provided table shows the properties of four different sample materials. A student has a substance with a density of 1.28 g/cm3. Which sample does the student have?

• Sample 1

• Sample 2

• Sample 3

• Sample 4

Tags

NGSS.MS-PS1-2

A car uses the force of friction from its brakes to slow down, which causes the brakes to heat up. As the car slows down-

• A. mechanical energy from the moving tires is converted to thermal energy.

• B. electrical energy from the brakes is converted into mechanical energy.

• C. thermal energy from the moving tires is converted to mechanical energy.

• D. thermal energy from the brakes is converted to electrical energy.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

A cook heats a meal in a microwave oven. What energy transformations occur between the microwave oven and the meal?

• electrical -> Light -> Chemical

• Chemical -> Thermal -> Light

• Electrical -> electromagnetic -> Thermal

• Chemical -> Electromagnetic -> Chemcical

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

The diagram below shows a hot air balloon rising. Propane gas tanks are seen at the bottom of the balloon.

What energy transformations occur when the propane gas is used to lift the balloon?

• Mechanical -> Light -> Chemical

• Chemical -> Mechanical -> Thermal

• Thermal -> Chemical -> Light

• Chemical -> Thermal -> Mechanical

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

A balance and a graduated cylinder are used to determine the density of a mineral sample. The sample has a mass of 14.7 g and a volume of 2.2 cm3. What is the density of the mineral sample?

• 0.15 g/cm³

• 32 g/ cm³

• 13 g/cm³

• 6.7 g/cm³

Heat moves between two substances until they both reach the same temperature. What is this process called?

• Conduction

• Convection

• Radiation

• Thermal Equilibrium

What was the approximate temperature of the hot water after 30 minutes?

• a. 135° F

• b. 125° F

• c. 95° F

• d. 85° F

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4