Temperature Thermal Energy and Heat

The picture below shows a closed system before and after undergoing a change.

What was changed in the system?

• Particles were added to the system.

• Water was added to the system.

• Heat was added to the system.

• Air was added to the system.

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Emerson places a beaker of water on a hotplate and turns the hotplate on. The temperature in the room is 25 ºC. After the water heats to 75 ºC, she adds pieces of ice to the beaker. Which of the following describes a transfer of heat energy that occurs during this experiment?

• from the air to the water

• from the ice to the beaker

• from the water to the ice

• from the water to the hotplate

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Directions: The table below shows the temperatures of several different objects made of the same material. Use the table to answer the question below.

What will happen if the ball is placed inside the box, in a closed system?

• Thermal energy will flow from the ball into the box until they come to the same temperature at 50°C.

• Thermal energy will flow from the box into the ball until they come to the same temperature at 25°C.

• Thermal energy will flow from the ball into the box until the box decreases in temperature to 20°C.

• Thermal energy will flow from the box into the ball until the ball increases in temperature to 30°C.

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Gregory is making a turkey for Thanksgiving by roasting it in his oven. The turkey started at a room temperature of 25°C, and the oven was preheated to 175°C. If Gregory accidentally turns off the oven after he places the turkey inside of it, then what will happen to the turkey?

• Thermal energy flows from the oven into the turkey and continues to flow until they reach equilibrium at 100°C or the turkey is removed.

• Thermal energy flows from the turkey into the oven and continues to flow until they reach equilibrium at 100°C or the oven is turned off.

• Thermal energy flows from the oven into the turkey and continues to flow until the turkey reaches its perfect temperature of 74°C.

• Thermal energy flows from the turkey into the oven and continues to flow until the oven is room temperature of 25°C.

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Jeriah places two metal cubes in contact with each other. Energy transfers as heat flows from Cube A to Cube B. What conclusion can you draw regarding Cube A?

• It is larger than Cube B.

• It is cooler than Cube B.

• It is smaller than Cube B.

• It is warmer than Cube B.

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NGSS.MS-PS1-4

Joe places two solid objects in contact with each other. Which property determines the direction of the flow of heat between the two objects?

• material of the objects

• volume of objects

• density of objects

• temperature of objects

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Nash puts his cold Coke Slurpee on to the metal roof of his mom's car. Describe the heat transfer that takes place.

• Heat is transferred from the car's roof into the Slurpee and increases the temperature of the Slurpee.

• Heat is transferred from the Slurpee into the roof and increases the temperature of the roof.

• The Slurpee stays the same temperature until it is completely gone.

• The roof doesn't change temperature due to the fact that it sits in the sun all day.

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Kiera is observing an experiment on heat flow. She has two noodles at differing temperatures, as shown in the table. She places the noodles in a pan of water that has been heated to 100 degrees Fahrenheit (°F ). How will heat flow in this system?

• from the water to noodle #1

• from the water to noodle #2

• from noodle #1 to the water

• from noodle #2 to the water

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NGSS.MS-PS1-4

There is a bowl of ice cream and Vivian puts whip cream from the refrigerator on it, how will the heat transfer?

• It will travel from the warmer whip cream to the frozen ice cream.

• Both items will remain the same temperature until they are both eaten.

• It will travel from the warmer ice cream to the frozen whip cream.

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When you touch something that feels cold, 

• heat from your hand moves into the cold substance.

• coldness moves from the cold substance into your hand.

• it melts.

• it freezes.

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