Thermal Physics

True or false: Heat moves from the cooler object to a warmer object

• True
• False

Tags

NGSS.MS-PS1-4

If two objects have different temperatures, heat will flow from the warmer object to the cooler one UNTIL ____________

• one reaches a temperature of zero
• they both have an equal temperature
• one runs out of energy

Tags

NGSS.HS-PS3-4

Joules and calories are units of measurement for __________________.

• heat

• insulators

• conductors

• thermometers

The amount of energy needed to raise the temperature of 1 gram of water by 1 ^oC is ____________________________.

• 1 calorie

• 1 joule

• 2 joules

• 1 kilogram

Temperature is a measure of the...

• total energy in a substance
• total kinetic energy in a substance
• average potential energy in a substance
• average kinetic energy of molecules in a substance

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The graph shows how the temperature of the substance changes with time.

• gas condensing

• gas cooling

• liquid cooling

• liquid solidifying

Which quantity gives the thermal capacity of a beaker?

• the thermal energy required to raise the temperature of the beaker by 1°C

• the total volume of hot liquid that the beaker can hold

• the total mass of hot liquid that the beaker can hold

• the thermal energy required to change the state of the beaker at constant temperature

A scientist is feeling sick and knows that if her temperature is a degree or more above 37.5°C she should go home from work. But all she has is a thermometer graduated in kelvin. What temperature does the thermometer need to be?

• 194.5 K

• 310.5 K

• 311.5 K

• 325.5 K

A lead fishing sinker with a mass of 75.0 g and a temperature of 25°C is placed on a block of ice at 0°C, which then melts. If 75.0 g of water at the same temperature were poured on the ice, which of the following is true?

• The water would melt more ice than the lead fishing sinker.

• The water would melt less ice than the lead fishing sinker.

• The water would melt the same amount of ice as the lead fishing sinker.

• Neither the water nor lead fishing sinker would melt any ice.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The specific heat of a liquid is 1000 J kg-1 K-1. What amount of heat is needed to raise the temperature of 4.0 kg of liquid from 30°C to 40°C?

• 4.0 × 10³ J

• 2.0 × 10⁴ K

• 4.0 × 10⁴ J

• 4.0 × 10⁴ K

Tags

NGSS.HS-PS3-2

NGSS.HS-PS3-4