Heat and Materials

A container of hot water was left out on a table. Some of its thermal energy was transferred to the environment. The results (in Celsius) are shown. What was the change in temperature resulting from this heat transfer in degrees Celsius?

• -5 degrees C

• -6 degrees C

• 5 degrees C

• 6 degrees C

Tags

NGSS.MS-PS1-4

Red food coloring was placed in hot water. Blue food coloring was placed in cold water. Both beakers had the same amount of water and the same amount of food coloring was added. However, the red food coloring dispersed in the water faster than the blue food coloring.

Claim: The molecules in the ____________ water moved at a _____________ rate causing the food coloring to move through the water quickly.

• cold, faster

• hot, slower

• cold, slower

• hot, faster

Tags

NGSS.MS-PS1-4

Red food coloring was placed in hot water. Blue food coloring was placed in cold water. Both beakers had the same amount of water and the same amount of food coloring was added. However, the red food coloring dispersed in the water faster than the blue food coloring.

Reasoning: When water is hot, the molecules ___________ up and _____________ apart. When water is colder, molecules move at a ______________rate. The _______ dye spreads out faster in the hot water

• speed, spread, faster, red

• speed, spread, slower, blue

• speed, spread, faster, blue

• speed, spread, slower, red

Tags

NGSS.MS-PS1-4

Temperature is not a direct measure of the thermal energy of a system. The total thermal energy of a system depends on its temperature and what other factors?

• The temperature of the system's environmental and its location in that environment.

• The number of atoms in the system and conductivity of the material.

• The boiling points and freezing points of the elements that make up the substances in the system.

• The number of atoms in the system and their molecular weights.

Tags

NGSS.HS-PS3-2

NGSS.HS-PS3-4

What property of plastic makes it a good choice for the pot handle?

• it is conductive

• it is not conductive

• solubility

• density

Tags

NGSS.MS-PS3-3

Jonesy has a flamethrower he puts a wooden box in front of him. He torches it and it is now a pile of ashes. what type of heat transfer cause it to burn?

• Convection

• Coduction

• Radiation

• Conduction

What are the three types of heat transfer?

• Radaition, Conduction, Convection

• Radiation, Conductors, Sun

• Insulator, Radiation, Conuction

• Thermal Energy, Sun, Heat

• Radiation, Conduction, Convection

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4

A man is trying to create fire. He is successful he accidently burns himself by the wind blowing the fire on his hand.What type of heat transfer caused his hand to be burned.(select all that could apply).

• Conduction

• Convection

• Radiation

• Wind

What type of heat energy is MOST likely to start a forest fire?

• Thermal Energy

• Radiation

• Conduction

• Convection

What happens to water molecules when a large quantity of thermal energy is added to water in the liquid state?

• Each molecule gives up kinetic energy and eventually stops moving.

• The more thermal energy added, the greater the attraction between molecules.

• The water molecules become more packed close together, and their temperature increase.

• The molecules gain kinetic energy, more farther apart, and become a gas.

Tags

NGSS.MS-PS1-4