Forces and Motion
Mechanical Energy
Electromagnetic Forces
Introduction to Waves
Atoms and Molecules
100
How many laws of motion are there?
3
100
_______ energy is the energy of motion.
kinetic
100
Similar charges and magnetic poles _____.
Opposite charges and magnetic poles _______.
repel, attract
100
Sound waves travel fastest in a...
a. liquid
b. vacuum
c. solid
d. gas
c. solid
100
What are the three subatomic particles?
proton, neutron, electron
200
A force can be described as a ____ or a ____.
push, pull
200
Energy that is stored is _________ energy.
potential
200
The space around a magnet where the magnetic forces act is known as a magnetic ______. (HINT: The Earth has one)
field
200
A large amplitude wave has ____ energy than a small amplitude wave.
more
200
How many protons, electrons, and neutrons does this element have?
22 protons
22 electrons
26 neutrons
300
How do you calculate velocity?
distance/time
300
Mechanical Energy = Kinetic Energy ☐ Potential Energy
What goes in the box?
a. x
b. /
c. +
d. -
c. +
300
An electric _______ is the movement of electrically charged particles.
current
300
As the frequency of a wave increases, the wavelength _________.
decreases
300
____ are atoms with extra electrons or missing electrons.
ions
400
Force depends on what two factors? (HINT: Newton's 2nd Law)
mass, acceleration
400
________ energy is caused by friction.
thermal
400
Describe one way to increase the strength of an electromagnet.
increase voltage (more batteries)
more coils
400
__________ waves move particles up and down perpendicular to the direction in which the wave travels.
____________ waves move particles back and forth along the same direction in which the wave travels.
transverse, longitudinal
400
An _______ of an element has the same number of protons and electrons as that element, but a different number of neutrons.
isotope
500
What three things do you need to describe the position of an object?
reference point, distance, direction
500
When you apply force on an object and the object moves in the direction of the force, you are doing ____.
work
500
An electric _____ converts electrical energy into mechanical energy (motion).
An electric _________ converts mechanical energy (motion) into electrical energy.
motor, generator
500
What are the three ways that waves interact with matter?
reflection, absorption, transmission
500
The electrons in the outermost orbital are called _______ electrons.
valence