Science Review

Front 1

Proteins

Back 1

large, complex biological polymers formed from amino acids. They make up hair, muscle, tendons, and fingernails

Front 2

Carbohydrates

Back 2

group of biological compounds, such as sugars and starches, with twice as many hydrogen atoms as oxygen atoms.

Front 3

Lipid

Back 3

Group of biological compounds that contains the same elements as carbohydrates but in different arrangements and combinations, and includes saturated and unsaturated fats.

Front 4

Nucleic Acids

Back 4

Essential organic polymers that control the activities and reproduction of cells

Front 5

Speed

Back 5

distance and object travels per unit of time

Front 6

Velocity

Back 6

the speed and direction of a moving object

Front 7

Acceleration

Back 7

rate of change of velocity; can be calculated by dividing the change in the velocity by the time it takes the change to occur

Front 8

Inertia

Back 8

resistance of a object to a change in its motion

Front 9

MOMENTUM

Back 9

the quantity of motion of a moving body, measured as a product of its mass and velocity.

Front 10

CENTRIPETAL FORCE

Back 10

a net force that is directed towards the center of a curved of circular path

Front 11

CENTRIPETAL ACCELERATION

Back 11

Acceleration of an object toward the center of a curved or circular path.

Front 12

TERMINAL VELOCITY

Back 12

the constant speed that a freely falling object eventually reaches when the resistance of the medium through which it is falling prevents further acceleration.

Front 13

GRAVITY

Back 13

attractive force between two objects that depends on the masses of the objects

Front 14

FRICTION

Back 14

the resistance that one surface or object encounters when moving over another

Front 15

POTENTIAL ENERGY

Back 15

the energy possessed by a body by virtue of its position relative to others, stresses within itself, electric charge, and other factors

Front 16

KINETIC ENERGY

Back 16

energy that a body possesses by virtue of being in motion.

Front 17

HEAT

Back 17

the quality of being hot

Front 18

TEMPERATURE

Back 18

the degree or intensity of heat present in a substance or objec

Front 19

WORK

Back 19

activity involving mental or physical effort done in order to achieve a purpose or result

Front 20

POWER

Back 20

physical strength and force exerted by something or someone

Front 21

LEVER

Back 21

a rigid bar resting on a pivot, used to help move a heavy or firmly fixed load with one end when pressure is applied to the other

Front 22

PULLEY

Back 22

a wheel with a grooved rim around which a cord passes. It acts to change the direction of a force applied to the cord

Front 23

EFFICIENCY

Back 23

the ratio of the useful work performed by a machine or in a process to the total energy expended or heat taken in.

Front 24

WAVE

Back 24

a repeating disturbance or movement that tranfers energy through matter or space

Front 25

DIFFRACTION

Back 25

the process by which a beam of light or other system of waves is spread out as a result of passing through a narrow aperture or across an edge, typically accompanied by interference between the wave forms produced.

Front 26

INTERFERENCE

Back 26

the combination of two or more electromagnetic waveforms to form a resultant wave in which the displacement is either reinforced or canceled.

Front 27

REFRACTION

Back 27

the fact or phenomenon of light, radio waves, etc., being deflected in passing obliquely through the interface between one medium and another or through a medium of varying density.

Front 28

CONVEX

Back 28

having an outline or surface curved like the exterior of a circle or sphere.

Front 29

CONCAVE

Back 29

having an outline or surface that curves inward like the interior of a circle or sphere

Front 30

RESONANCE

Back 30

the reinforcement or prolongation of sound by reflection from a surface or by the synchronous vibration of a neighboring object.

Front 31

DOPPLER EFFECT

Back 31

an increase (or decrease) in the frequency of sound, light, or other waves as the source and observer move toward (or away from) each other.

Front 32

SOUND

Back 32

vibrations that travel through the air or another medium and can be heard when they reach a person's or animal's ear

Front 33

FILTER

Back 33

a screen, plate, or layer of a substance that absorbs light or other radiation or selectively absorbs some of its components

Front 34

PIGMENT

Back 34

the natural coloring matter of animal or plant tissue

Front 35

REFLECTION

Back 35

the throwing back by a body or surface of light, heat, or sound without absorbing it