Temperature is a measure of how hot
something is.

 We measure temperature using a thermometer.

 Temperature is measured in Kelvin (K).

 Digital thermometers are used to measure human body temperature.

 Why do you think scientists use the Kelvin scale instead of the Celcius scale?

 We use the Kelvin scale because there are no negative numbers

 O K is referred to as absolute zero.

 Absolute zero is the coldest anything can be and equals -273.15 ºC

.

Kelvin Celcius

- 273.15

Celcius Kelvin
+ 273.15

What are they?

How do they work?

What unit is used?

Students should be able to:

1. Define ‘temperature’.

2. State the SI unit for temperature.

3. State other units for temperature.

4. Name the instrument used to measure temperature.

5. Explain the significance of absolute zero.

6. Explain why we use the Kelvin scale.

7. Convert degress Celsius to Kelvin.

8. Convert Kelvin to degrees Celsius.

​Students should be able to:

1. Define ‘area’.

2. State the SI unit for area.

3. State other units for area.

4. Write down the formula used to measure the area of regularly shaped objects.

5. Measure the area of regularly shaped objects.

6. State the name of the equipment used to measure the area of irregularly shaped objects.

7. Measure the area of irregularly shaped objects.

 The area of a shape is the amount of surface enclosed within its boundary lines.

 Basically area is how much it covers something.

 Area is measured in metres squared written as

m².

 It can also be measured in kilometres squared (km²),

centimetres squared (cm²) or millimetres squared
(mm²).

 Multiply the length by the Width

 Area = Length x Width

How could we measure the area of a leaf?

 Trace the outline of your hand onto squared

graph paper.

 Count the number of squares covered to find

the area of your hand.

 Count any square that is more than half

covered.

 Each square is equal to 4 cm².

Result: Area of my hand=

cm²

​Students should be able to:

1. Define ‘area’.

2. State the SI unit for area.

3. State other units for area.

4. Write down the formula used to measure the area of regularly shaped objects.

5. Measure the area of regularly shaped objects.

6. State the name of the equipment used to measure the area of irregularly shaped objects.

7. Measure the area of irregularly shaped objects.

​Students should be able to:

1. Define ‘volume’.

2. State the SI unit for volume.

3. State other units for volume.

4. Write down the formula used to measure the volume of regularly shaped objects.

5. Measure the volume of regularly shaped objects.

6. State the name of the equipment used to measure the volume of liquids

7. Explain how to measure the volume of liquids.

8. State the name of the equipment used to measure the volume of irregularly shaped objects.

9. Measure the volume of irregularly shaped objects.

​Volume

žWhat is volume?

žThe volume of an object is the amount of space it takes up.

žThe S.I. unit of volume is the cubic metre (m³).

žVolume is often measured in cubic centimetres (cm³).

žAnother common unit is the litre (l), which is equal to 1000 cm³.

ž1 ml (millilitre) = 1 cm³

ž1,000 ml = 1 L

 Multiply the length by the width by the height.

 Volume = Length x Width x Height

​žUse a graduated cylinder to measure the volume of a liquid.

žPour the liquid into the graduated cylinder and read its volume.

žThe surface of the liquid is curved. This is called a meniscus.

žWhen reading the level of water in a container, read at the lowest part of the meniscus.

Volume of a Liquid

​Students should be able to:

1. Define ‘volume’.

2. State the SI unit for volume.

3. State other units for volume.

4. Write down the formula used to measure the volume of regularly shaped objects.

5. Measure the volume of regularly shaped objects.

6. State the name of the equipment used to measure the volume of liquids

7. Explain how to measure the volume of liquids.

8. State the name of the equipment used to measure the volume of irregularly shaped objects.

9. Measure the volume of irregularly shaped objects.