Physics Heat (Thermal Equilibrium & Heat Capacity)

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

True/False: when two substances reach the same temperature they are in thermal equilibrium.

• True
• False

Tags

NGSS.HS-PS3-4

High temperature is connected to:

• Low kinetic energy.
• High kinetic energy.
• Zero net energy.
• Equal kinetic energies.

Tags

NGSS.MS-PS3-4

NGSS.MS-PS1-4

What letter represents heat?

• S
• C
• T
• Q

Tags

NGSS.HS-PS3-4

How much heat is absorbed when 355g of water goes from 25-45 degrees Celsius? The specific heat of water is 4180 J/kg.K 

• 21945 J
• 21945 g
• 29678 J
• 29678 g

Polystyrene is a good heat...

• emitter
• absorber
• conductor
• insulator

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-3

Which has the higher specific heat capacity, water or sand?

• water
• sand
• they are both equal

Recall the equation to calculate the change in heat (Thermal Energy) of an equation:
 ∆Q = mc∆T
If 
∆Q = 100 J
m = 10 g 
∆T = 2 °C
What is c (in J/kgK) ?

• 20 
• 5
• 25
• 200

Two bodies are said to be in thermal equilibrium if

• rates of heat transfer between them are equal

• rates of heat transfer between them are not equal

• no heat flow between them

• maximum heat flow between them

The two bodies are said to be in thermal equilibrium if

• no heat and equal temperature

• small net flow of heat and low temperature

• no net flow of heat and equal temperature

• maximum flow of heat and maximum temperature