Energy and Heat Review

Question 1

The ability to do work

Answer 1

Energy

Question 2

A group of interacting elements that act according to a set of rules to form a unified whole

Answer 2

System

Question 3

Energy is stored in bonds of CHEMICAL COMPOUNDS.

Answer 3

Chemical Energy

Question 4

Physical energy resulting from ELECTROMAGNETIC RADIATION

Answer 4

Radiant Energy

Question 5

Energy generated by the movement of ELECTRONS from one point to another

Answer 5

Electrical Energy

Question 6

ENERGY from the temp of MATTER

Answer 6

Thermal Energy

Question 7

The energy released during NUCLEAR FUSION or fission

Answer 7

Nuclear Energy

Question 8

The energy which a body possesses by virtue of being in motion

Answer 8

Kinetic Energy

Question 9

The energy possessed by a body by virtue of its position relative to others. Stored Energy.

Answer 9

Potential Energy

Question 10

Energy due to compression and stretching

Answer 10

Elastic Potential Energy

Question 11

Kinetic and Potential Energy

Answer 11

Mechanical Energy

Question 12

Energy due to stored energy and chemical bonds between atoms

Answer 12

Chemical Potential Energy

Question 13

The degree of hot or coldness in an object has thermal energy. Or the average KE of the particles that make up the object.

Answer 13

Temperature

Question 14

Hear required to raise the temp of the unit (1kg) of the mass of a given substance by a given amount (1 degree)

Answer 14

Specific Heat

Question 15

2 objects at different temps touch each other and energy directly transfers HOT TO COLD

Answer 15

Conduction

Question 16

The movement caused within a fluid (currents) when hotter less dense material rises and colder denser material sinks.

Answer 16

Convection

Question 17

The emission of energy as electromagnetic waves move

Answer 17

radiation

Question 18

A substance or material that allows electricity and heat to flow through it

Answer 18

conductor

Question 19

A substance that does not readily allow the passage of heat or sound.

Answer 19

insulator

Question 20

the transfer of kinetic energy from one medium or object to another, or from an energy source to a medium or object.

Answer 20

Heat

Question 21

What is the equation for KE? What is the equation for gravitational potential energy?

Answer 21

KE=1/2 m(velocity squared)
Label is Joules
GPE=mgh Label Joules

Question 22

What is the law of conservation of energy?

Answer 22

Energy is neither created nor destroyed only transfered

Question 23

Explain why we use copper and iron cooking pans. Relate your answer to heat transfer and to specific heat.

Answer 23

They are good heat conductors and they have a low specific heat so they heat up faster

Question 24

What is the freezing and boiling point for the 3 temp scales?

Answer 24

F 32 212 C 0 100 K 273 373

Question 25

Give and example of a good insulator and a good conductor.

Answer 25

Conductor copper insulator rubber wood plastic

Question 26

List 2 scenarios when thermal energy transfer, or thermal insulation, is inhibited.

Answer 26

Shivering to keep your body warm
Insulation in a house
Putting on layers to keep you warm

Question 27

Give a real-world example of heat transfer.

Answer 27

Stove to the pot, the stove’s heat is transferred into the room temp pot and this gets hot fast due to the extreme temp difference

Question 28

Give an example of all 3 types of heat transfer.

Answer 28

Conduction stove to pot Convection air popper and radiation microwave