reflection
wave Strikes a object and does what back?
it bounces back
what is a wave??
disturbances that carry energy
What is the color of the sun?
all colors mixed together, which appear to our eyes as white
thermal energy definition
total kinetic energy of all particles in an object
heat definition
Heat, energy that is transferred from one body to another as the result of a difference in temperature
reflected waves have??
the same frequency and speed
velocity=
how fast a wave moves forward
what causes frequency
As supply and demand change, this impacts frequency. For example, if there's more demand for electricity than supply then frequency will fall, but if supply is higher than demand, frequency will rise.
radiant energy definition
light that comes from the sun
Which of these elements has the greatest ionization energy? Possible Answers: Rubidium. Sodium. Lithium.
Lithium
How can a clear object be transparent and visible at the same time?
light waves travel faster then what??
they travel faster than sound
what is frequency also known as?
temporal frequency
electrical energy definition
motion of negatively changed electrons
What are atoms made of?
protons, neutrons and electrons
Does an atom have a color?
nope
Could waves of different amplitude interfere?
The two interfering waves do not need to have equal amplitudes in opposite directions for destructive interference to occur.
what are three types of frequency
ungrouped frequency distributions, grouped frequency distributions, cumulative frequency distributions, and relative frequency distributions.
mechanical energy definition
energy die to motion & position of object
what is the heaviest element
Oganesson
Does the back of a rainbow look the same as its front side?
A rainbow does not have a back side.
What is a standing wave?
Standing wave, combination of two waves moving in opposite directions, each having the same amplitude and frequency.
When does a light beam have only a single frequency?
A light beam will have a single frequency only when it is monochromatic.
electromagnetic energy definition
electrical & magnetic waves that travel through a vacuum
What is the difference between a compound and a molecule
A molecule is a group of two or more atoms held together by chemical bonds. A compound is a substance which is formed by two or more different types of elements which are united chemically in a fixed proportion. All molecules are not compounds. All compounds are molecules.