Flashcards in weight, mass, density etc Deck (19)

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1

## What is weight

### The force of gravity pulling on a mass - measure in Newton’s

2

## What is mass

### Mass is the amount of substance - measure in kilograms/grams

3

## how do u find what the weight of something is

### mass x gravity

4

## What is gravity

### Force of attraction between masses. It is a property of mass, the bigger the mass the bigger the gravity

5

## What is gravity on earth

### 9.81 Newton’s

6

## How do you find the density of an object

### Mass divided by volume

7

## What happens to water when it is frozen

### Expands by 10%

8

## What temperature is water at its densest

### 4°C

9

## What is the RD for polythene and what happens to it in water

###
0.90

Float

10

## What is the RD of water

### 1

11

## What is the RD of PVCu and what happens to it in water

###
1.28

Sink

12

## What is the RD of aluminium and what happens to it in water

###
2.70

Sink

13

## What is the RD of cast iron and what happens to it in water

###
7.90

Sink

14

## What is the RD of copper and what happens to it in water

###
8.90

Sink

15

## What is the RD of natural gas and what happens to it

###
0.6

Rise

16

## What is the RD of air

### 1

17

## What is the RD of propane and what happens to it

###
1.5

Sink

18

## What is the RD of butane and what happens to it

###
2

Sink

19