The smallest particle of an element that can be identified with that element. This consists of protons and neutrons surrounded by electrons.
What is an atom?
100
The flow of electric charge; measured in amperes (coulombs per second)
What is electric current?
100
A force field that fills the space around every magnet or current-carrying.
What is a magnetic field?
100
A "wiggle in space and time"; a disturbance the repeats regularly.
What is a wave?
100
The rate at which velocity is changing. The change may be in magnitude, direction, or both.
What is acceleration?
200
A chart that lists elements by atomic number and by electron arrangements, so that elements with similar chemical properties are in the same column.
What is the periodic table?
200
All electrons have the same amount of negative charge; all protons have a positive charge equal in magnitude to the negative charge on the electron. Like charges repel, opposite charges attract.
What is the behavior of charges?
200
Electric charges can be individual (positive and negative), however with magnetic fields there is ALWAYS a north and south pole.
What is a major difference between electric charges and magnetic poles?
200
A repeating back and forth motion about an equilibrium position.
What is a vibration?
200
Units of speed divided by time (km/s; m/s; mi/h)
What is acceleration measured in?
300
110. 90 occur in nature.
What is the approximate number of elements known today?
300
Materials that can be made to behave sometimes as insulators and sometimes as conductors.
What is a semiconductor?
300
An electric current causes this.
What is the magnetic field caused by?
300
A back and fourth vibratory motion of a swinging pendulum.
What is Simple Harmonic Motion?
300
What is the acceleration of a car that travels in a straight line at a constant speed of 100 km/h?
Zero, there is no change in speed.
400
One is equal to the total weight of an atom, while the other is just the number of protons.
What is difference between atomic number and atomic mass?
400
The relationship among electrical force, charges, and distance: The electrical force between two charges varies directly as the product of the charges and inversely as the square of the distance between them.
What is Coulomb's Law?
400
Particles moving perpendicular to the magnetic field, and zero for particles moving parallel to the field.
What is deflection greatest for?
400
The highest point of a wave.
What is a crest?
400
Why does the unit of time enter twice in the unit of acceleration?
Acceleration can be defined as a change of velocity divided by time. Since the units for velocity are distance/time you naturally get the units of (distance/time)/time
500
A substance made of different elements combined into fixed proportions.
What is a compound?
500
According to Coulomb's law, the ____ ____ between two charged objects is proportional to the product of the charges and inversely proportional to the square of the distance between them.
What is electrical force?
500
These lines form a concentric circle or an arc shape.
What is the shape of the magnetic field lines that surround a current-carrying wire?
500
Drop a stone in a quiet pond and you'll produce a wave that moves out from the center in an expanding circle. Does the water move of is it a disturbance?