Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
the bouncing of sound or light off an object
the number of vibrations per second
how high or low a sound is
the loudness or softness of a sound
to enlarge, expand or increase the volume of a sound
a repetition of sound by the reflection of sound waves from a wall, mountain, or other obstructing surface.
the movement of sound waves through a gas, solid or liquid that creates sound
to take in or soak up
a substance that occupies space like a solid, liquid or gas
a method or device used for locating objects underwater using sound waves
material that does NOT allow light to pass through
material allowing SOME light to pass through
material that allows light to pass through
the bending or breaking of light as it moves from one material to another
a lens that is thicker at the edges than it is at the middle
a lens that is thicker at the center than it is at the edges
the energy of motion or moving
the energy an object has because of its condition or position; stored energy
the action of moving or changing places or positions
a push or pull upon an object resulting from the object's interaction with another object
the force that happens when two things rub together
a measurement of how heavy something is; a measure of a pull of gravity on an object
the amount of matter or weight of an object
a measurement of distance over time; how fast something travels
a force that pulls everything towards the center of the Earth
Newton's 1st Law - Law of Inertia
An object moving in a straight line will continue moving in a straight line, unless acted on by an outside force. Also an object at rest will remain at rest, unless acted upon by an outside force.
Newton's 2nd Law
Force will cause a change in the motion of an object. The change in motion depends on the amount of force and the mass of the object.
Newton's 3rd Law
For each action, there is an equal and opposite reaction.