Exploring Physics Chapters 1-10 Review

Question 1

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

Answer 1

heat

Question 2

To reduce the heating effect of electricity in wires, the current is reduced but the ___ is increased.

Answer 2

voltage

Question 3

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

Answer 3

mercury

Question 4

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

Answer 4

temperature

Question 5

Label the four forces acting on an airplane in flight.

Answer 5

Question 6

f_ab = -f_ba

Answer 6

third law of motion

Question 7

If f = 0 then a = 0

Answer 7

first law of motion

Question 8

Physics is the science that explores how energy acts on

Answer 8

matter

Question 9

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

Answer 9

Ideal gas law

Question 10

Momentum is the mass of an object times its

Answer 10

velocity

Question 11

p = m x v

Answer 11

definition of momentum

Question 12

State the second law of motion

Answer 12

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

Question 13

Thales of Melitus discovered that ___ could be given a charge of static electricity.

Answer 13

amber

Question 14

To calculate speed, divide distance by

Answer 14

1time

Question 15

The frequency of a sound is known as its

Answer 15

pitch

Question 16

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

Answer 16

Daniel Fahrenheit

Question 17

Heat is a type of

Answer 17

energy

Question 18

Heat is the motion of ___

Answer 18

atoms and molecules

Question 19

Density is equal to mass divided by

Answer 19

volume

Question 20

The loudness of sound is measured in

Answer 20

decibels

Question 21

State Ohm’s law

Answer 21

current = voltage/resistance, or in words: current is directly proportional to voltage and inversely proportional to resistance.

Question 22

is sensitive to light but cannot see color.

Answer 22

rods

Question 23

The force that pushes electrons around a circuit is

Answer 23

voltage

Question 24

controls the amount of light that enters the eye.

Answer 24

iris

Question 25

The three properties of a sound are frequency, intensity, and ___.

Answer 25

quality

Question 26

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

Answer 26

vacuum

Question 27

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

Answer 27

Bernoulli’s principle

Question 28

The study of sound is known as

Answer 28

acoustics

Question 29

An object with a ___ charge has more protons than electrons.

Answer 29

positive

Question 30

Doubling velocity of a moving object makes its kinetic energy

Answer 30

four times as great

Question 31

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 31

Archimedes’ principle of buoyancy

Question 32

is the opening through which light enters the eye.

Answer 32

pupil

Question 33

a = f/m

Answer 33

second law of motion

Question 34

Acceleration is found by dividing the

Answer 34

change in speed by the change in time

Question 35

Inertia is a property of matter that resists changing its

Answer 35

velocity

Question 36

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

Answer 36

Boyle’s law

Question 37

Doubling mass of a moving object ___ its kinetic energy.

Answer 37

doubles

Question 38

adjusts light to the best focus.

Answer 38

lens

Question 39

brings light to a focus.

Answer 39

cornea

Question 40

f = m x a

Answer 40

force equation

Question 41

is a surface of light sensitive nerves.

Answer 41

retina

Question 42

I = f x t

Answer 42

definition of impulse

Question 43

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

Answer 43

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

Question 44

carries information from the eye to the brain.

Answer 44

optic nerve

Question 45

is sensitive to light and can distinguish color.

Answer 45

cones