Matter and Atoms
what is anything that has mass and takes up space?
matter
what is a substance that is made up of only one type of atom?
element
a force
What form of energy is stored energy?
potential energy
what type of wave travels horizontally and vertically?
transverse wave
what is the basic unit of matter?
atoms
a substance made of two or more different elements chemically bonded together
compound
what force pulls objects toward Earth?
gravity
what form of energy is the energy of motion?
kinetic energy
What part of a wave is highest point?
crest
which atom has a positive charge?
proton
a force that holds atoms together in a compound
chemical bond
How do we calculate speed?
distance / time
what type of energy/wave does not require a medium?
electromagnetic radiation
which property of waves affects its height and energy?
amplitude
What atom has a negative charge?
electron
which of these is a compound- H2, H2O, C, O2
H2O
what are the two things that are required for work to be done?
force and motion in the same direction
What is the law of conservation of energy?
energy is never created or destroyed
What does frequency measure?
the number of waves per second
what atom has a neutral charge?
neutron
how is a compound different from a mixture?
compounds are chemically bonded, a mixture is physically combined
a force that slows down motion when two surfaces rub against each other (ex. when you rub your hands together)
friction
which form of energy is produced from fusion or fission?
nuclear energy
Why does sound travel faster in solids than in gases?
particles are closer together, allowing vibrations to move faster