Exploring Physics Chapters 1-7 Review

Question 1

James Prescott Joule found how mechanical energy due to motion compares to ___ energy.

Answer 1

heat

Question 2

If f = 0 then a = 0

Answer 2

first law of motion

Question 3

Heat is the motion of ___

Answer 3

atoms and molecules

Question 4

To calculate speed, divide distance by

Answer 4

1time

Question 5

The scientist who discovered that pure water has a fixed boiling and freezing temperature was

Answer 5

Daniel Fahrenheit

Question 6

State the second law of motion

Answer 6

The acceleration of an object is directly proportional to the force acting on it and inversely proportional to its mass.

Question 7

f_ab = -f_ba

Answer 7

third law of motion

Question 8

Inertia is a property of matter that resists changing its

Answer 8

velocity

Question 9

Doubling mass of a moving object ___ its kinetic energy.

Answer 9

doubles

Question 10

Density is equal to mass divided by

Answer 10

volume

Question 11

The velocity of a fluid and its pressure are inversely related.

Answer 11

Bernoulli’s principle

Question 12

The lifting force acting on a solid object immersed in water is equal to the weight of the water shoved aside by the object.

Answer 12

Archimedes’ principle of buoyancy

Question 13

The volume of a gas is inversely proportional to the pressure.

Answer 13

Boyle’s law

Question 14

Pressure times volume of any gas divided by the temperature is a constant.

Answer 14

Ideal gas law

Question 15

How can scientist measure temperatures higher than 1,700^o?

Answer 15

They can measure higher temperatures with electrical conductivity and color of light emitted by glowing substance.

Question 16

The two most common substances used in thermometers are colored alcohol and

Answer 16

mercury

Question 17

Label the four forces acting on an airplane in flight.

Answer 17

Question 18

Physics is the science that explores how energy acts on

Answer 18

matter

Question 19

A feather and lump of lead will fall at the same speed in

Answer 19

vacuum

Question 20

Heat is a type of

Answer 20

energy

Question 21

f = m x a

Answer 21

force equation

Question 22

Acceleration is found by dividing the

Answer 22

change in speed by the change in time

Question 23

Doubling velocity of a moving object makes its kinetic energy

Answer 23

four times as great

Question 24

a = f/m

Answer 24

second law of motion

Question 25

Momentum is the mass of an object times its

Answer 25

velocity

Question 26

p = m x v

Answer 26

definition of momentum

Question 27

The three factors that determine the heat contained in an object are type of substance, mass, and

Answer 27

temperature

Question 28

I = f x t

Answer 28

definition of impulse