Forces and Energy change

Question 1

what do you do first to find out the density
3

Answer 1

find the volume
(length x height x width)
use units cubed i.e. 3 cm³

Question 2

if the shape is irregular, then…
3

Answer 2

cut it into regular shapes
then find the volume of each shape
then add them together.

Question 3

after you calculate the volume, then…
2

Answer 3

weigh the object in GRAMS

Question 4

how do you calculate the mass
1

Answer 4

volume x weight

Question 5

how do you calculate density
1

Answer 5

volume

Question 6

what is the units for density
1

Answer 6

g/cm³

Question 7

the density of water is….
2

Answer 7

1.0

Question 8

the densest objects are all…
1

Answer 8

solids

Question 9

does the density increase or decrease as the atomic number gets higher
1

Answer 9

increases

Question 10

an object will float if…
2

Answer 10

it is less dense that water

Question 11

an object will sink if…
2

Answer 11

it is more dense than water

Question 12

if an object has enough air in it, it will…
1

Answer 12

float

Question 13

will different liquids mix
1

Answer 13

no

Question 14

are gasses denser than liquids
1

Answer 14

no

Question 15

do gasses all have the same density
1

Answer 15

no

Question 16

thermal energy is measured in…
1

Answer 16

joules

Question 17

when their is thermal energy, the particles
1

Answer 17

vibrate

Question 18

when their is more thermal energy, the particles
2

Answer 18

will vibrate
faster

Question 19

is temperature the same as heat
1

Answer 19

no

Question 20

heat tells us about the…
2

Answer 20

total energy
of the particles

Question 21

temperature tells us about the…

Answer 21

average energy of the particles

Question 22

does the air have a weight
1

Answer 22

yes

Question 23

what is the units for temperature
3

Answer 23

kelvin, Fahrenheit, Celsius

Question 24

if a hot object is placed in cold water, what will happen

Answer 24

the heat will transfer
the objects will have the same temperature.

Question 25

what color best absorbs light
2

Answer 25

matt black

Question 26

what color best reflects light
2

Answer 26

shiny white

Question 27

how do you tell if an energy is kinetic
1

Answer 27

if it is moving

Question 28

what is a fluid
2

Answer 28

a liquid
or gas

Question 29

if there is more space between the particles, then… 1

Answer 29

it is less dense