Thermodynamics

Which way does heat flow?

• hot to cold
• cold to hot
• it doesn't 
• out to sea, duh!

A substance with a high specific heat:

• Is always extremely hot.
• Requires a lot of energy to become hot.
• Is not heavy.
• Does not requires a lot of energy to become hot.

High temperature is connected to:

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

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is thermodynamics?

• movement of heat
• it's magic
• measurement of heat
• none of them

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

The amount of thermal energy required to raise the temperature of one (1) kilogram of a substance by 1^o C is known as:

• Specific heat
• Heat of fusion
• Heat of vaporization
• Melting point

An ice cube is placed on a table and begins to melt.  The following conclusion can be made.

• Energy is being absorbed by the table which causes the cube to melt.
• Energy is being transferred from the table to the ice cube.
• Energy is being created by the air and table and making the cube heat up.

50 kg of hot water is added to 25 kg of cold water. The heat lost by the hot water is _____ the heat gained by the cold water.

• less than
• greater than
• equal to
• Not enough information to determine.

Heat flows between two objects touching one another only when a difference in _____ exists.

• mass
• specific heat
• density
• temperature

Heat transfer by conduction occurs when...

• particles bump into each other
• large numbers of atoms move from place to place
• atoms give off heat in the form of electromagnetic waves
• electromagnetic waves travel from place to place through a vacuum

Tags

NGSS.HS-PS3-4