IPS Spring FInal Flashcards
physical science is the study of ___
matter and energy
matter is anything that…
has mass and volume
takes up space
energy is the ability to…
do work or cause change
mass is the amount of ___ in an object
matter
work is the transfer of ___ in which a ___ is put on an object and the object moves ___
energy, force, in the direction of the force
scientific method is a ___ used to ___
set of steps, solve a problem
a hypothesis is a ___ made from ___
an educated guess, previous observations and knowledge
volume is..
the amount of space an object takes up
a variable is any factor that can…
make a change in the results of an experiment
temperature is the measure of ___ of the atoms in an object
kinetic energy
density is the ___ of a material
mass per unit volume
speed is..
the distance an object travels over a period of time
velocity is the ___ over ___ and ___
distance an object travels
time
the object’s direction
acceleration is the ___ of ___ of an object over time
change, velocity
g is the ___ of a falling object due to ___ in a vacuum. What is it?
acceleration
gravity
9.8m/s^2
gravity is a ___ between any objects dependant on the ___ of the objects. Often defined as a
force, mass, a downward force on all objects
a force is..
any push or pull on an object
friction is the ___ that ___ between 2 surfaces in contact
force, opposes the motion
terminal velocity is ___ due to the ___ and ___ becoming balanced
highest velocity a falling object will reach, forces of gravity, air resistance
inertia is the ___ of an object to ___. Which of Newton’s Laws is this?
resistance, any change in its motion, first
free-fall is when an object falls free from ___
air resistance
weight is the ___ of the ___ on an ___
measure, force gravity, object’s mass
absolute zero is a ___ at which ___. The temperature is…
theoretical temperature, all particle motion would stop, -273°C or 0K
a machine is a device used to…
make work easier
Power is the ___ at which ___. Power is the amount of ___ over ___.
rate, work is done, work done, over time
efficiency is a measure of how much ___ is changed into ___ by the machine
work put into a machine, useful work output
thermal expansion is the ___ due to ___
increase in volume of an object, increased temperature
a fluid is any substances whose particles can…
move past one another and take the shape of its container
kinetic energy is the energy of an object due to the ___
object’s motion
potential energy is the energy of an object ___, or energy ___
at rest, stored by an object
a vacuum is…
an area without air
nuclear fusion is the production of energy from the ___ of the nuclei of atoms at ___
collisions and combining, very high temperatures and pressure
nuclear fission is the production of energy from the ___ of nuclei, like ___ nuclei
splitting, uranium
fossil fuels are ___ found ___ formed from ___
energy sources, within the earth, the decay of plants and animals millions of years ago
renewable energy resources are energy resources that…
can be produced as quickly as they are used
non-renewable energy resources are energy resources that…
are used up quicker than they can be made
What are the steps of the scientific method
- identify the problem
- observations
- hypothesis
- test hypothesis
- analyze data
- conclusion
what is the formula for mass
m=D x Vf
hecto
100 H
deca
10 D
deci
.1 d
centi
.01 c
milli
.001 m
what is the formula for mass
m=DxV
what is the formula for distance
d = s x t
what is the formula for temperature
what is the formula for density
D=m/V
what is the formula for volume
regular shaped object: V=l x w x h
irregular shaped object: displacement rule
what is the unit for mass
Kg
what is the unit for distance
m
What is the unit for temperature
K
what is the unit for density
g/cm^3 or g/mL
what is the unit for volume
regular shaped object: m^3, cm^3
liquid: mL, L
what is the unit for mass
Kg
What is the formula for speed
s=d/t
what is the formula for velocity
v=d/t
what is the formula for acceleration
v.f - v.i
a = ———-
t
What is the formula for weight
W = m x g
what is the formula for force
F = m x a
what is the formula for momentum
p=mxv
what is the unit for speed
m/s
what is the unit for velocity
m/s direction
what is the unit for acceleration
m/s^2 direction
what is the unit for weight
N
what is the unit for force
N
what is the unit for momentum
Kg x m/s direction
What is Newton’s 1st Law
An object at rest stays at rest unless acted on by an outside force; inertia
What is Newton’s 2nd Law
the amount of acceleration that an object has depends on the force put on the object and the object’s mass ( F = m x a )
What is Newtons 3rd Law
every action force has an equal and opposite reaction ( law of conservation of matter)
What are the 6 different types of simple machines
pulley
wheel + axel
lever
wedge
inclined plane
screw
What is the Law of Conservation of Energy
energy cannot be created or destroyed but can be changed into other forms
what is the formula for work
W = F x d
what is the unit for work
J
what is the unit for energy
Joules
What is the formula for power
P = W/t
what is the unit for power
watts (W)
what is the formula for efficiency
e = (Wout/Win) x 100
what is the unit for efficiency
What are the three types of fossil fuels
petroleum
natural gas
coal
what are some different types of renewable energy resources
wind, solar, hydroelectric
What happens in nuclear fusion
two hydrogen atoms collide under millions of degrees celsius to produce 1 helium atom, one neutron, and lots of energy
what happens in nuclear fission
a neutron is shot at a uranium atom (U-235) and the uranium atom splits and becomes 1 krypton atom, 1 barium atom, 3 neutrons, and energy
a chain reaction occurs with the 3 new neutrons
What causes a wave
something vibrating
what does a wave carry
energy but not the matter with it
What is refraction
refraction is the bending of a wave caused by a change in its speed as it travels from one medium to another
what is diffraction
diffraction is the bending of a wave around an object
what is the difference between refraction and diffraction
refraction bends as it changes speed while going through a different medium
diffraction bends around and object
What are the two types of waves
longitudinal/compressional and transverse
what is an example of a compressional wave
sound
what is an example of a transverse wave
light, electromagnetic waves
list the electromagnetic spectrum in order
radio, micro, infrared, visible light, ultraviolet, x rays, gamma
which EM waves carry more energy
gamma
which EM waves have a higher frequency
gamma
which EM waves have the longest wavelength
radio
what is the unit for frequency
hertz (Hz)
what is the unit for wave speed
m/s
what is the unit for wavelength
meter
what is the unit for loudness of a sound
decibels (dB)
what does the color on the periodic table represent
state of matter at room temperature
what does group # tell you
location
what does period # tell you
number of shells
what does the roman numeral tell you
number of valence electrons; helps with oxidation number
what does the atomic # tell you
the number of protons in the nucleus
what does the atomic mass # tell you
sum of protons and neutrons in the nucleus of an atom
what is the charge of protons
positive
what is the charge of neutrons
neutral
what is the charge of electrons
negative
where are the metals found on the periodic table
left side
where are the metalloids found on the periodic table
the middle
where are the non-metals found on the periodic table
right side
what is the first group called
alkali metals
what is the second group called
Alkaline Earth Metals
what are groups 3-12 called
transition metals
what is group 17 called
halogens
what is group 18 called
noble gases
where are the reactants in a chemical equation
left of yield sign
where are the products in a chemical equation
right of yield sign
what are the superscripts in a chemical equation called
oxidation numbers
What is a chemical bond
forces that hold atoms together in a compound
What is the difference between an ionic bond and a covalent bond
ionic bonds form between metals and non-metals and the atoms will either gain electrons or lose electrons when they react
but, covalent bonds form between 2 non-metals and the atoms will share electrons when they react
chemistry is the study of ___, ___, ___, and ___
matter
its composition
its properties
how it reacts with other matter
an atom is the ___ of an element that ___ of that element
smallest part
retains the properties
an element is a group of ___ that ___ by ___ means
like atoms combined together
cannot be separated into simpler substances
physical or chemical
a compound is a substance that contains…
two or more different elements chemically combined in a fixed proportion
atomic number is the number on the periodic table that represents…
the number of protons in the nucleus of an atom/element
atomic mass number is the number on the periodic table that represents…
the number if both protons and neutrons in the nucleus of an atom/element
period number is a number on the periodic table that represents the…
number of energy levels an atom/element has
the roman numeral is a number in the periodic table that represents…
the number of electrons in the outermost energy level on an atom/element
valence electrons are the number of…
electrons in the outermost energy level of an atom
a stable element is an element that has…
its outermost energy level full of electroms
a neutral atom is..
an atom that has no charge
isotopes are atoms ___ that contain different ___
of the same element
numbers of neutrons
an ion is a
charged atom
a chemical symbol is the ___ for ___
shorthand notation
an element
a chemical formula is a ___ for a ___ or a ___ using ___
shorthand notation
compound
a diatomic element
chemical symbols and numbers
NaCl is an example of a what
chemical formula
a chemical reaction is the process by which ___ undergo a change to ___
one or more substances
produce one or more different substances
a chemical equation is a ___ of a ___ using ___
shorthand description
chemical reaction
chemical formulas and symbols
the starting materials in a chemical reaction are called…
reactants
the substance formed as a result of a chemical reaction is called…
the products
the force of attraction between atoms that holds atoms together
chemical bond
An ionic bond is a ___ between ___ that holds the ions in a compound
force of attraction
oppositely charged ions
A covalent bond is a ___ between ___ to hold the atoms in a compound
force of attraction
atoms that share electrons
form between a compound that contains a metal and a non-metal
ionic bind
form between a compound that contains 2 non-metals
covalent bond
the kinetic theory of matter explains…
how atoms in matter move or behave
thermodynamics is the study of ___ and ___
energy
how it is transferred
specific heat is the ___ needed to change___ of a ___ by
amount of energy
the temperature
1Kg object
1°C
heat is the ___ from an area at a ___ temperature to an area at a ___ temperature
movement of thermal energy
higher
lower
insulators are materials that…
do not allow energy to flow through them very easily
conductors are materials that…
allow energy to flow through them very easily
a wave is any ___ or ___ that transmits ___ through ___
repeating disturbance
movement
energy
matter or space
a reflection is when…
a wave strikes an object and bounces off the object
refraction is the ___ as it passes ___ from ___ to ___
bending of a wave
at an angle
one type of medium
another different type of medium
diffraction is the…
bending of a wave around a barrier or through an opening
first class lever
fulcrum is in the middle
second class lever
output is in the middle
third class lever
input is in the middle
What is the temperature for freezing point in F
32
What is the temperature for freezing point in C
0
What is room temperature in F
68-72
what is room temperature in C
20-22
What is boiling point in F
212
What is boiling point in C
100
What is human body temperaute in F
98.6
what is human body temperature in C
37
tera
one trillion - T
Giga
one billion - G
Mega
one million - M
micro
one millionth - µ
nano
one billionth - n