Exploring Physics Chapters 1-10 Review Flashcards
James Prescott Joule found how mechanical energy due to motion compares to ___ energy.
heat
To reduce the heating effect of electricity in wires, the current is reduced but the ___ is increased.
voltage
The two most common substances used in thermometers are colored alcohol and
mercury
The three factors that determine the heat contained in an object are type of substance, mass, and
temperature
Label the four forces acting on an airplane in flight.
fab = -fba
third law of motion
If f = 0 then a = 0
first law of motion
Physics is the science that explores how energy acts on
matter
Pressure times volume of any gas divided by the temperature is a constant.
Ideal gas law
Momentum is the mass of an object times its
velocity
p = m x v
definition of momentum
State the second law of motion
The acceleration of an object is directly proportional to the force acting on it and inversely proportional to its mass.
Thales of Melitus discovered that ___ could be given a charge of static electricity.
amber
To calculate speed, divide distance by
1time
The frequency of a sound is known as its
pitch
The scientist who discovered that pure water has a fixed boiling and freezing temperature was
Daniel Fahrenheit
Heat is a type of
energy
Heat is the motion of ___
atoms and molecules
Density is equal to mass divided by
volume
The loudness of sound is measured in
decibels
State Ohm’s law
current = voltage/resistance, or in words: current is directly proportional to voltage and inversely proportional to resistance.
is sensitive to light but cannot see color.
rods
The force that pushes electrons around a circuit is
voltage
controls the amount of light that enters the eye.
iris
The three properties of a sound are frequency, intensity, and ___.
quality
A feather and lump of lead will fall at the same speed in
vacuum
The velocity of a fluid and its pressure are inversely related.
Bernoulli’s principle
The study of sound is known as
acoustics
An object with a ___ charge has more protons than electrons.
positive
Doubling velocity of a moving object makes its kinetic energy
four times as great
The lifting force acting on a solid object immersed in water is equal to the weight of the water shoved aside by the object.
Archimedes’ principle of buoyancy
is the opening through which light enters the eye.
pupil
a = f/m
second law of motion
Acceleration is found by dividing the
change in speed by the change in time
Inertia is a property of matter that resists changing its
velocity
The volume of a gas is inversely proportional to the pressure.
Boyle’s law
Doubling mass of a moving object ___ its kinetic energy.
doubles
adjusts light to the best focus.
lens
brings light to a focus.
cornea
f = m x a
force equation
is a surface of light sensitive nerves.
retina
I = f x t
definition of impulse
How can scientist measure temperatures higher than 1,700o?
They can measure higher temperatures with electrical conductivity and color of light emitted by glowing substance.
carries information from the eye to the brain.
optic nerve
is sensitive to light and can distinguish color.
cones
