the bouncing back of a ray of light, sound, or heat when the ray hits a surface that it does not go through

impossible to see through; preventing the passage of light

What characteristics make materials most reflective?

The combination of all forces acting on an object

to push away(North and North or South and South)

to pull toward(North and South)

A force that opposes motion between two surfaces that are in contact

Horizontal distance between the crests or between the troughs of two adjacent waves

the number of complete wavelengths that pass a point in a given time

a part in a longitudinal wave where the particles are spread apart

A buildup of charges on an object.

stored energy that results from the position or shape of an object

Height of a wave

The area of magnetic force around a magnet

Material through which a wave travels

a coil that has a soft iron core and that acts as a magnet when an electric current is in the coil

matter in the medium moves back and forth along the same direction that the wave travels(sound)

A piece of glass that separates white light into colors of the spectrum.

What travels faster? light OR sound

the energy an object has due to its motion

What forms of energy does a lamp have?(light bulb)

distance a wave travels per unit of time

What happens to the force of attraction when you increase the distance between 2 objects?

a measure of how loud a sound is

If you increase the amplitude you are increasing the ___ of a wave

What ends of a magnet REPEL

How could you increase the electric current flowing in a generator?

Burning wood converts

anything that can burn has stored

RADAR-Radio Detection and Ranging

if the mass doubles

most potential energy

elastic potential energy of slingshot

elastic potential energy of bowstring

stored energy in human arm

chemical potential energy of gunpowder

When does a bow and arrow have the greatest potential energy?

The kinetic energy of a marble rolling down a ramp depends on its

An elephant and a dog are running at the same velocity(speed and direction). Which has more kinetic energy?

2 elephants have equal mass. The elephant that is moving faster has

When frequency decreases

---- waves such as sound waves and water waves have to have a --- to travel through in order to transfer energy

one thing mechanical and electromagnetic waves have in common is that they

sound waves are

if the amplitude of a wave is increased the

sound travels the fastest through a

the shorter the wavelength of a transverse wave

when a rainbow is created light waves bend when it passes from the medium of air to the medium of a liquid rai drop or solid prism at an angle

when all light color is reflected we see

when all light color is absorbed we see

A material that allows heat and electricity to pass through it.

examples of a conductor

the kinetic energy of a pendulum is connected to it ___ while the potential energy is determined by its ___