I2.2 Temperature and Heat

Which of these measures the average kinetic energy of the molecules in a material?

• Heat

• Temperature

• Thermal energy

• Bonding energy

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

A lizard sits on a hot rock to get warm. What type of thermal transfer is this?

• Conduction

• Convection

• Radiation

• Kinetic

What is thermal energy?

• Total kinetic energy of all particles in an object

• Average kinetic energy of particles

• Transfer of kinetic energy between two objects

• Average transfer of kinetic energy

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4

A potato at 80 °C is placed in soup at 40 °C, in a room at 20 °C. Which is correct?

• Potato → soup, soup → room

• Room → soup, soup → potato

• Room → soup, room → potato

• Soup → potato, potato → room

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

A student adds hot iron to raise water temperature. What properties of iron are most important?

• Mass and volume

• Volume and density

• Temperature and mass

• Density and temperature

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Four iron objects: nail (100 °C), spoon (25 °C), frying pan (50 °C), paper clip (150 °C). Which has the most thermal energy?

• Nail

• Spoon

• Frying pan

• Paper clip

Which best defines heat?

• The total kinetic energy in an object

• Energy transferred between objects due to temperature difference

• The amount of matter in an object

• The stored potential energy in an object

Tags

NGSS.MS-PS3-3

Which type of heat transfer can occur in a vacuum (space)?

• Conduction

• Convection

• Radiation

• All of the above

Which has more thermal energy:

• A cup of boiling water (100 °C)

• A lake at 25 °C

• Both are equal

• Neither, because temperature is different

Tags

NGSS.MS-PS1-4

Which will heat a room most evenly?

• A fireplace

• A radiator with water moving through pipes

• Touching a hot stove

• Direct sunlight through one window

Tags

NGSS.MS-PS1-4