Time and Temperature

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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NGSS.MS-PS1-4

NGSS.MS-PS3-5

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

Tags

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

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

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.

Tags

NGSS.MS-PS1-4

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.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

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.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

How is temperature related to heat?

• Temperature is a measure of the heat of an object.

• Heat causes a change in the temperature of an object.

• Raising the temperature causes the heat of an object to increase.

• Temperature and heat are two different ways to measure the same thing.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Lisa has a bottle of water. How can she increase the thermal energy of the water?

• She can pour the water into a larger bottle.

• She can increase the temperature of the water.

• She can place the bottle of water in the refrigerator.

• She can divide the water between tow identical containers.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

Kito puts his spoon into a helping of fresh, hot, mashed potatoes as shown in the picture. Which process takes place when the objects come together?

• The temperature of the spoon increases, but its thermal energy does not change.

• Energy in the form of heat is transferred by conduction from the warmer mashed potatoes to the cooler spoon.

• The thermal energy of both the mashed potates and the spoon increase as the energy in the form of heat is transferred between them.

• The average temperature of the spoon does not change.

Tags

NGSS.MS-PS1-4

As energy in the form of heat is added to an ice cube, it begins to melt. What causes melting.

• Heat causes the molecules to expanded and forces them apart.

• Heat removes thermal energy from the ice cube and causes it to become liquid water.

• Adding energy causes the bonds between the hydrogen and oxygen in the ice cube to break.

• The transfer of thermal energy to the ice cube causes its molecules to move faster.

Tags

NGSS.MS-PS1-4