Ch 1 Natural science

• Natuurkunde
• Middelbare school
• havo
• Leerjaar 2

1.1 A new subject

Science is about gaining knowledge and using this  in everyday life.

Three examples of natural science are:

- biology (living nature; plants, animals, the human body)

- chemistry (changes are permanent, e.g. burning wood)

- physics ( changes are temporary in non living nature; e.g. melting ice)

examples of physics

air pressure

light

sound

movement

temperature

gravity

examples of chemistry

baking

cooking

fire

Fire works

Quantity

Quantity: a property that you can measure

 

Examples: time, length mass, speed

Units

Unit: a quantity of size that is used for expressing things. 

The unit is what gives the number a meaning.

E.g. Melissa’s height is 154 centimeters

The distance to school is 5 kilometer

Abbreviations

kilograms ( the abbreviation is kg)

meter (abbreviaton is m)

kubic centimeter (abbreviation is cm3)

etc.