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Primary SIX science curriculum notes

da BRIAN LEE N/A

A destructive insect or other animal that attacks crops, food, livestock, etc.

Pesticides are chemical compounds that are used to kill pests

Pesticides are chemicals that we humans use to kill pests we don't want.

Pests

Pesticides

Solar-powered photovoltaic (PV) panels convert the sun's rays into electricity by exciting electrons in silicon cells using the photons of light from the sun.

If there is no light there would be less energy in the world that humans can use.

Producing Light energy from solar panels.

Photosynthesis is a chemical reaction that takes place inside a plant, producing food for the plant to survive. Carbon dioxide, water and light are all needed for photosynthesis to take place.

The sun is the ball of fire in the sky that the Earth goes round, and that gives us heat and light.

Plants need light from the sun to do photosynthesis and humans need oxygen and food from the plants.

Photosynthesis

Sun

Without these we wouldn't know what is an organism is like

Physical Properties

Chemical properties cannot be determined by touching or viewing a sample.

Chemical Properties

Physical properties are any properties of matter which can be perceived or observed without changing the chemical identity of the sample.

Science In My Life

Space

Biology

Chemistry

Physics