Akoranga 5 Mahi Tuatahi ^🔗

1. Write the date in your books
2. Write the order of the electromagnetic spectrum from lowest to highest energy (use your notes)
3. Between which types of radiation does ultra violet radiation sit?

Ngā Whāinga Ako ^🔗

1. I can name some types of ionizing radiation
2. I can explain why UV radiation is linked to skin cancer and why rates are relatively higher in NZ than in other countries

:::instruction Write ngā whāinga ako in your book :::

Ionizing Radiation ^🔗

Radiation that has enough energy to detach electrons from atoms/molecules.

• This can break molecules and make them not function properly
• Pātai: What molecule is important to life?
• Whakatika: Deoxyribose Nucleic Acid (DNA)

:::instruction Write down three types of ionizing radiation :::

Ultraviolet (UV) Radiation ^🔗

• Produced by the sun
• Can be partially blocked (absorbed) by the ozone ($O_{3}$) layer in the atmosphere
• Ozone is a colourless gas

Ozone Layer ^🔗

• Pātai: Why is there a hole?
• Whakatika: We used to use chemicals called chloroflurocarbons (CFCs) in aerosol cans. These chemicals break down the ozone layer!
• The ozone layer very slowly naturally repairs itself, so since we stopped using them, it is slowly getting better!

Cleaning ^🔗

1. Clean the whiteboard with spray
2. Empty the recycling bin (by W block)
3. Get a cloth - spray and wipe all student desks
4. Get a cloth - spray and wipe all lab benches
5. Get a cloth - spray and wipe all window sills
6. Ensure all desks are straight and chairs pushed in
7. Use a scrubbing brush to clean all sinks & put rubbish in bins

Ngohe: Reading ^🔗

This article on the ozone layer is posted on Google Classroom. Find it and give it a read!

https://www.sciencedaily.com/releases/2020/08/200826083036.htm