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

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

1.1.2. parts of the digestive system and how they work

1.1.2.1. mouth

1.1.2.1.1. tongue

1.1.2.1.2. teeth

1.1.2.1.3. saliva

1.1.2.2. gullet

1.1.2.2.1. brings down the food

1.1.2.3. stomach

1.1.2.3.1. churns our food and digests a little food

1.1.2.4. small intestine

1.1.2.4.1. digests our food into the bloodstream

1.1.2.5. large intestine

1.1.2.5.1. passes out undigested food

1.1.2.6. anus

1.1.2.6.1. pass out our waste,faeces

1.2. respiratory system

1.2.1. function

1.2.1.1. 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

1.2.2.1. nose

1.2.2.1.1. take in air

1.2.2.2. windpipe

1.2.2.2.1. sends air to our lungs

1.2.2.3. lungs

1.2.2.3.1. helps us to exchange gases

1.3. skeletal system

1.3.1. function

1.3.1.1. It's function is to give our body shape

1.3.1.2. It's function is to protect our delicate organs

1.3.1.3. It's function is to help us with our movement.

1.3.2. parts of the skeletal system and how they work

1.3.2.1. joints

1.3.2.1.1. enable us to bend our body

1.3.2.2. ribcage

1.3.2.2.1. protects our heart and lungs

1.3.2.3. skull

1.3.2.3.1. protects our eyes and brain

1.4. muscular system

1.4.1. function

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

1.4.2. parts of the muscular system and how they work

1.4.2.1. muscles

1.4.2.1.1. enable us to move

1.5. circulatory system

1.5.1. function

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

1.5.2. parts of the circulatory system and how they work

1.5.2.1. heart

1.5.2.1.1. pumps blood through our body

1.5.2.2. veins

1.5.2.2.1. transports blood

1.5.2.3. blood vessels

1.5.2.3.1. also transports blood

2. diversity

2.1. Things

2.1.1. Living Things

2.1.1.1. animals

2.1.1.1.1. mammals

2.1.1.1.2. birds

2.1.1.1.3. fish

2.1.1.1.4. insects

2.1.1.2. plants

2.1.1.2.1. flowering plants

2.1.1.2.2. non-flowering plants

2.1.1.3. fungi

2.1.1.3.1. feed on dead plants and animals

2.1.1.3.2. do not make their own food

2.1.1.3.3. eg.mushroom,black fungus

2.1.1.4. micro-organisim

2.1.1.4.1. bacteria

2.1.1.5. characteristics of living things

2.1.1.5.1. need air,water and food

2.1.1.5.2. respond to changes

2.1.1.5.3. grow

2.1.1.5.4. reproduce

2.1.1.5.5. move by itself

2.1.1.5.6. die

2.1.2. non-living things

2.1.2.1. characteristics of non-living things

2.1.2.1.1. don't need air,water and food

2.1.2.1.2. don't respond to changes

2.1.2.1.3. don't grow

2.1.2.1.4. don't reproduce

2.1.2.1.5. don't die

2.1.2.2. once alive or natural

2.1.2.2.1. leather

2.1.2.2.2. cotton

2.1.2.2.3. wood

2.1.2.3. never alive or man-made

2.1.2.3.1. glass

2.1.2.3.2. metal

2.1.2.3.3. plastic

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

3.4.1.1. examples: iron,steel,nickel

3.4.2. magnet cannot attract non-magnetic materials-non-metals

3.4.2.1. examples: copper,silver,aluminum

3.4.3. magnets cannot attract all metals-non-magnetic metals

3.4.3.1. 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. what is a system?

5.1. each part of a system has a function

5.2. the parts must work together

5.3. a system needs all parts to work properly