Chapter 7

Question 1

momentum

Answer 1

p=mv

Question 2

Heat

Answer 2

Energy in transit, flowing from one substance to a cooler substance

Question 3

Internal energy

Answer 3

The total of the kinetic energy possessed by a substance

Question 4

Absolute zero

Answer 4

Zero degrees on the Kelvin scale, the temperature of an object when its internal energy’s 0

Question 5

thermal equilibrium

Answer 5

heat will always flow from an object of higher temperature to an object of lower temperature

Question 6

Thermal energy

Answer 6

Energy an object has because it’s been heated

Question 7

Three ways to transfer heat

Answer 7

Conduction, convection, and radiation

Question 8

Conduction

Answer 8

Happens in solids. Vibrations in atoms are transferred to nearby atoms because the atoms are linked together

Question 9

Convection

Answer 9

Happens in fluids. The particles are free to flow around and when they collide, some of the energy’s transferred from the higher-energy particle to the lower energy particle

Question 10

Radiation

Answer 10

Happens in electromagnetic waves

Question 11

The equation for kinetic energy

Answer 11

1/2mv^2

Question 12

Water has the highest heat capacity of all the common substances

Question 13

Thermal conductivity

Answer 13

A measure of how well a material transfers heat

Question 14

Best conductor

Answer 14

Metal

Question 15

Best non-metal conductor

Answer 15

Rock

Question 16

The speed at which something heats up

Answer 16

Heat capacity