Forces and Energy change Flashcards
what do you do first to find out the density
3
find the volume
(length x height x width)
use units cubed i.e. 3 cm³
if the shape is irregular, then…
3
cut it into regular shapes
then find the volume of each shape
then add them together.
after you calculate the volume, then…
2
weigh the object in GRAMS
how do you calculate the mass
1
volume x weight
how do you calculate density
1
volume
what is the units for density
1
g/cm³
the density of water is….
2
1.0
the densest objects are all…
1
solids
does the density increase or decrease as the atomic number gets higher
1
increases
an object will float if…
2
it is less dense that water
an object will sink if…
2
it is more dense than water
if an object has enough air in it, it will…
1
float
will different liquids mix
1
no
are gasses denser than liquids
1
no
do gasses all have the same density
1
no
thermal energy is measured in…
1
joules
when their is thermal energy, the particles
1
vibrate
when their is more thermal energy, the particles
2
will vibrate
faster
is temperature the same as heat
1
no
heat tells us about the…
2
total energy
of the particles
temperature tells us about the…
average energy of the particles
does the air have a weight
1
yes
what is the units for temperature
3
kelvin, Fahrenheit, Celsius
if a hot object is placed in cold water, what will happen
the heat will transfer
the objects will have the same temperature.
what color best absorbs light
2
matt black
what color best reflects light
2
shiny white
how do you tell if an energy is kinetic
1
if it is moving
what is a fluid
2
a liquid
or gas
if there is more space between the particles, then… 1
it is less dense
