Vocabulary
A disturbance that transfers energy from one point to another is called?
Wave
The highness or lowness of a sound is called?
Pitch
Warm air ___ while, cooler air ___.
Rises; Sinks
Electromagnetic waves travel through...
Empty space
EM stands for Evolving-Magnetic.
False.
(Electromagnetic)
The distance between a point on one wave and an identical point on the next wave is called?
Wavelength
Hard surfaces ______ sound while, soft surfaces _____ sound.
Reflect; Absorb
Thermal energy is the random motion of ____.
Particles.
Light waves travel in straight lines called?
Rays
Amplitude is the lowest point of a wave.
False
(Trough)
The measure of the energy a wave carries is called?
Amplitude
___ are formed as molecules are pushed CLOSER together.
Compressions
Thermal energy flows from ____ energy to ____ energy.
Higher; Lower
Natural light comes from?
The Sun.
Crest is the highest point of a wave.
True
The number of waves that pass a given point in one second is called?
Frequency
Sound waves must travel through a _____ to transfer energy.
Medium (solid, liquid or gas)
If you stepped on a hot sidewalk, heat would come in contact with which body part first?
Your foot.
The law of ______ states that light hits a hard medium and bounces off at an opposite angle.
Reflection
The triangular piece of glass or plastic that can bend light is called a Prism.
True
Waves per second is?
Frequency
Sound and water waves travel through ___.
Matter
Convection currents flow through which states of matter?
Liquids and Gases.
Visible light.
Movement of particles are called rotations.
False.
(Vibrations)