Heat and Temperature

Rahma got an ice cream from her mom. The ice cream melts under the sun because the ice cream ___________.

• gains heat from the sun

• loses heat to the sun

• cannot withstand the heat from the sun

• produce too much heat

A device that measures temperature. 

• Thermal energy
• Temperature
• Thermometer
• Heat

A temperature scale that is used mostly in United States.

According to it, water freezes at 32 degrees and boils at 212 degrees.

• Celsius

• Fahrenheit

• Kelvin

• All of them

The faster molecules move, 

• the higher the temperature
• the less temperature
• the same temperature
• I don't know

How heat is transfered?

• From high to low temperature
• From low to high
• Up to down
• Left to right

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.

Which description defines heat?

• total thermal energy of an object or substance

• change in the temperature of a substance in degrees Celsius

• energy transferred between objects at different temperatures

• average kinetic energy of the particles that make up a substance

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.

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.

Which example illustrate the transfer of energy through RADIATION?

• feeling warmth when you sit in a sunny place.

• feeling warm air while standing in front of the blower from a heating system.

• feeling the warmth of the bricks around a fireplace by touching them with your hand.

• feeling warmth on the soles of your feet when you walk along the beach on a sunny day.