Mass, Weight and Density

Question 1

What is weight measured in?

And what is Mass measured in?

Answer 1

Weight = Newtons 
Mass = Kg

Question 2

What value does gravity have on earth?

Answer 2

10N/kg or 10m/s(2)

If your mass is 75kg, your weight will be 750N
If your weight is 1300N, your mass will be 130kg
If your mass is 120g, your weight will be 1.2N

Question 3

What is the equation for weight?

Answer 3

Weight=Mass x Gravity
W = M x G

W M x G

Question 4

What is mass?

Answer 4

The mass of an object tells us the AMOUNT OF MATTER the object contains
Measured in kg or g

M=DxV

Question 5

What is volume?

Answer 5

Volume tells us HOW MUCH SPACE the the object takes up.
Measured in cm(3) or m(3)

V=M/D

Question 6

What is density?

Answer 6

Density tells us the MASS of 1cm(3) or 1m(3) of a material.
Measured in g/cm(3) or kg/m(3)

D=M/V

Question 7

Equation for mass?

Answer 7

Mass = Density x Volume

M
DxV

Question 8

What do you need to find the density of an object?

How would you do this?

Answer 8

You need to find it’s mass and Volume.

Find the mass using a top pan balance
Find the volume by multiplying LxBxH
(For irregular shapes, lower the object into a cylinder with a measured amount of water in it and take away the new volume of water from the old)

Question 9

How could you increase the reliability of experiment results?

Answer 9

Repeat a few times and average the results

Question 10

What is density a ratio between

Answer 10

Mass and volume

M:V

Question 11

How could you find the average density of an object from a graph

Answer 11

Find the gradient of the graph