Science topics for primary 3

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Science topics for primary 3 by Mind Map: Science topics for primary 3

1. Body System

1.1. digestive system

1.1.1. function It's function to break down our food.

1.1.2. parts of the digestive system and how they work mouth tongue teeth saliva gullet brings down the food stomach churns our food and digests a little food small intestine digests our food into the bloodstream large intestine passes out undigested food anus pass out our waste,faeces

1.2. respiratory system

1.2.1. function It's function is to help us breathe and our exchange of gases.

1.2.2. parts of the respiratory system and how they work nose take in air windpipe sends air to our lungs lungs helps us to exchange gases

1.3. skeletal system

1.3.1. function It's function is to give our body shape It's function is to protect our delicate organs It's function is to help us with our movement.

1.3.2. parts of the skeletal system and how they work joints enable us to bend our body ribcage protects our heart and lungs skull protects our eyes and brain

1.4. muscular system

1.4.1. function It's function is to help us move.

1.4.2. parts of the muscular system and how they work muscles enable us to move

1.5. circulatory system

1.5.1. function It's function is transport blood through our body

1.5.2. parts of the circulatory system and how they work heart pumps blood through our body veins transports blood blood vessels also transports blood

2. what is a system?

2.1. each part of a system has a function

2.2. the parts must work together

2.3. a system needs all parts to work properly

3. magnets

3.1. types of magnets

3.1.1. bar magnet

3.1.2. U-shaped magnet

3.1.3. rod magnet

3.1.4. horseshoe magnet

3.1.5. ring magnet

3.1.6. button magnet

3.2. what does a magnet have?

3.2.1. poles that represent the north-south

3.3. information

3.3.1. unlike poles attract

3.3.2. like poles repel

3.4. things it can/cannot attract

3.4.1. magnets can only attract magnetic materials-magnetic metals examples: iron,steel,nickel

3.4.2. magnet cannot attract non-magnetic materials-non-metals examples: copper,silver,aluminum

3.4.3. magnets cannot attract all metals-non-magnetic metals examples: wood,plastic,fabric

3.5. magnets are usually used in a compass.

3.5.1. a compass looks like this

3.5.2. a magnet when allowed to turn freely,will point to a north-south direction.

4. plant system

4.1. leaves

4.1.1. Makes food for the plant

4.2. stem

4.2.1. Transports water and food for plant

4.3. roots

4.3.1. Take in water and minerals for plant

4.3.2. holds the plant firmly

5. diversity

5.1. Things

5.1.1. Living Things animals mammals birds fish insects plants flowering plants non-flowering plants fungi feed on dead plants and animals do not make their own food eg.mushroom,black fungus micro-organisim bacteria characteristics of living things need air,water and food respond to changes grow reproduce move by itself die

5.1.2. non-living things characteristics of non-living things don't need air,water and food don't respond to changes don't grow don't reproduce don't die once alive or natural leather cotton wood never alive or man-made glass metal plastic