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75 Cards in this Set

  • Front
  • Back
velocity
speed in a certain direction
acceleration
the rate of change of velocity
volume
a measure of how much space an object takes up
mass
a measure of how much matter is in an object
gram
the mass of one cubic centimeter of water at 4 degress celsius
force
push or pull
Newton's 1st Law of Motion
An object at rest remains at rest and an object in motion remains in motion at constant velocity unless acted upon by an unbalanced force
Newton's 2nd Law of Motion
F=ma
Newton's 3rd Law of Motion
for every action force there is an equal and opposite reaction force
power
the rate at which work is done
energy
the ability to do work
kinetic energy
energy due to an object's motion
Law of Conservation of energy
energy can neither be created nor destroyed by ordinary means
wave
a traveling disturbance that carries energy from one place to another
transverse wave
a wave in which the medium moves at right angles (perpendicular) to the direction of the wave
atom
a tiny particle made up of protons, neutrons, electrons and contains one nucleus
atomic number
the number of protons in an atom
mass number
the mass of an individual atom in AMU
isotope
atoms of an element with a specified number of neutrons
valence shell
the outermost shell of an atom
refraction
the bending of light as it travels from one medium to another
half-life
the amount of time it takes for half of the atoms of a substance to decay
supernova
when a star forms iron it collapses on itself and then explodes
Big Bang theory
About 13.7 billion years ago when a single point in the universe exploded, creating galaxies
longitudinal wave
a wave in which the medium moves back and forth in the direction of the wave
How many milliliters are there in a liter?
1000
Will the mass of an object change if it is moved from Earth to the moon?
no
What are the two main measuring systems?
English & Metric
What does it mean when the acceleration of an object is negative?
object is going backwards
How many grams are there in a kilogram?
1000
What is the English unit of force?
pounds
What is the metric unit of force?
Newtons
How many Newtons are there in a pound?
4.5N
All objects at rest have (----) forces acting upon them
balanced
All objects at constant velocity have (----) forces acting upon them
balanced
All accelerating objects have (----) forces acting upon them
unbalanced
What is the equation for calculating work?
w=fd
What unit is used to measure work in the metric system?
Joules
What unit is used to measure work in the English system?
ft-lbs
1 hp = (----) ft-lbs/sec
550
What is the English unit of power?
ft-lbs/second or HP
What is the metric unit of power?
Watts
What does the word energy mean in Greek?
work-within
What unit is enrgy measured in?
Joules
What is the exception to the Law of Conversation of energy?
nuclear energy
What two measurements are needed to describe a transverse wave?
amplitude & wavelength
Which has more energy, a low amplitude wave or a high amplitude wave?
high amplitude
Which has more energy, a short wavelength wave or a long wavelength wave?
short wavelength
What causes sound?
vibrations
What is meant by one hertz?
one per second
Is a high pitch sound high frequency or low frequency?
high frequency
Is a high pitch sound long wavelength or short wavelength?
short wavelength
Approximately, what is the speed of sound in miles per hour?
750 mph
Approximately how long does it take for sound to travel one mile?
.000005 seconds
What is the charge on a proton?
+1
Where is the proton located?
nucleus
What is the charge on a neutron?
neutral
Where is the neutron located?
nucleus
What is the charge on an electron?
-1
Where is the electron located?
orbitals
How much larger is a proton than an electron?
1836 times larger
List the eight orbitals covered in class in the order that they fill?
1s 2s 2p 3s 3p 4s 3d 4p
List the seven types of electromagnetic radiation from least energy to most energy
radio/tv,microwave, infrared, visible, ultraviolet, x-rays, gamma
List the seven colors of the visible spectrum from least energy to most energy
red, orange, yellow, green, blue, violet
What is the speed of light in miles per second?
186,000
What is the difference between AC and DC current?
The direction in which the electrons flow
What does frequency measure?
sound
What two particles can be added together to make the other particle?
neutron & proton
What is the value of g on Earth?
g = 9.8m/s2 (acceleration due to gravity)
If you double the mass of an object, what happens to the force due to gravity?
doubles
(----)centimeter(s) = 1 meter
100
(----)meter(s) = 1 kilometer
1000
(----)centimeter(s) = 1 inch
2.54
(----)mile(s) = 1 kilometer
.62
A sparrow accelerates at 4 m/s2. This means that each second the sparrow's velocity changes by how much?
4 meters per second