Physics (Rare)

Question 1

Acceleration

Answer 1

Rate at which velocity changes with time

Question 2

Acoustics

Answer 2

Science that deals with the study of mechanical waves

Question 3

Adhesion

Answer 3

Tendency for different types of particles to cling together

Question 4

Aerodynamics

Answer 4

Study of the motion of air when it interacts with solid objects

Question 5

Alloy

Answer 5

Metallic mixture of two different elements

Question 6

Alternating current

Answer 6

Movement of electric charge that reverses direction

Question 7

Ampere

Answer 7

Unit of electric current

Question 8

Angstrom

Answer 8

One ten-billionth of a meter

Question 9

Astronomical unit

Answer 9

Distance from Earth to the sun

Question 10

Background radiation

Answer 10

Ionizing radiation that is always present in Earth’s atmosphere

Question 11

Big Bang

Answer 11

Model that explains the early development of the universe

Question 12

Binary star

Answer 12

Star system with two stars orbiting around each other

Question 13

Black hole

Answer 13

Region of space where gravity prevents everything from escaping

Question 14

Boson

Answer 14

Fundamental particle

Question 15

Buoyancy

Answer 15

Upward force that opposes the weight of submerged object

Question 16

Celsius

Answer 16

Scale and measurement unit for temperature

Question 17

Centripetal force

Answer 17

Force that makes something follow a curved path

Question 18

Cohesion

Answer 18

Tendency for like particles to cling together

Question 19

Density

Answer 19

Mass per volume

Question 20

Dew point

Answer 20

Temperature at which water vapor condenses to liquid water

Question 21

Displacement

Answer 21

Fluid moving out of the way when an object is placed in it

Question 22

Doppler effect

Answer 22

Change in the frequency of a wave when the observer moves

Question 23

Drag

Answer 23

Air resistance or fluid resistance

Question 24

Elasticity

Answer 24

Property of an object returning to its original shape after a force is applies

Question 25

Endothermic

Answer 25

Reaction in which the system absorbs energy from its surroundings

Question 26

Farad

Answer 26

Unit of capacitance

Question 27

Fission

Answer 27

Process in which the nucleus of an atom splits into smaller parts

Question 28

Force

Answer 28

Mass times acceleration

Question 29

Friction

Answer 29

Force resisting the motion of materials sliding against each other

Question 30

Fusion

Answer 30

Process in which multiple atomic nuclei join to create a larger nucleus

Question 31

Gamma Ray

Answer 31

Electromagnetic radiation of high frequency

Question 32

General relativity

Answer 32

Einstein's theory of gravitation

Question 33

Hertz

Answer 33

Unit of frequency, defined as cycles per second

Question 34

Inertia

Answer 34

Resistance of an object to change in its motion

Question 35

Joule

Answer 35

Unit of heat

Question 36

Lever

Answer 36

Simple machine consisting of a beam pivoting on a hinge

Question 37

Light

Answer 37

Electromagnetic radiation visible to the human eye

Question 38

Mass

Answer 38

Amount of matter in a body

Question 39

Matter

Answer 39

Anything that has mass and volume

Question 40

Momentum

Answer 40

Mass times velocity

Question 41

Neutrino

Answer 41

Neutral elementary particle

Question 42

Ohm

Answer 42

Unit of electrical resistance

Question 43

Pendulum

Answer 43

Suspended weight that can swig on a pivot

Question 44

Photon

Answer 44

Elementary particle of light

Question 45

Pneumatics

Answer 45

Application of pressurized gas to affect motion

Question 46

Pressure

Answer 46

Ratio of force to area

Question 47

Pulley

Answer 47

Simple machine, a wheel on an axle that moves a cable along its circumference

Question 48

Quantum mechanics

Answer 48

Physics dealing with atomic and subatomic particles

Question 49

Supernova

Answer 49

Explosion of a star

Question 50

Temperature

Answer 50

Physical property that expresses notions of hot and cold

Question 51

Torque

Answer 51

Tendency of a force to rotate an object on an axis

Question 52

Transducer

Answer 52

Device that converts energy from one form to another

Question 53

Uncertainty principle

Answer 53

Principle that the position and momentum of a particle cannot be simultaneously known

Question 54

Vacuum

Answer 54

Space that is empty of matter

Question 55

Watt

Answer 55

Unit of power