1. Title: The Nitrogen Cycle
Plant Hormones
Welcome Year 9 GCSE
Mr Brooks
Title: The Nitrogen Cycle
Date: 4 September, 2019
Starter: 5 MINS
Using your laptops/textbook pg94, answer the questions in your books:
Why is nitrogen important?
Even though 78% of air we breath why cant we extract our nitrogen from the air?

2. The Nitrogen Cycle Learn it…
15 minutes
Clues are stuck around the exploration zone (8 in total)
Fill in your worksheet using these clues.
Literacy – Reading and extracting information

3. Bacteria are essential for the nitrogen cycle
Apply it…
5 MINS
Bacteria are essential for the nitrogen cycle
In your books…
What are the four types of bacteria in the nitrogen cycle and what do they each do?
This is a B grade question
Literacy – Reading and writing
Remember – Full sentences, check spelling and grammar

4. On your mini-white boards
Quick questions
What do animals use proteins for?
What chemical is excreted in the urine?
What weather event fixes nitrogen gas into the soil?
Where do nitrogen fixing bacteria live (2 places)?
What do plants use nitrates for?

5. Apply it… Literacy – Reading and writing This is an A grade question
1) Use the data in the table to draw a graph.
Numeracy – data interpretation and presentation
I will be judging your graph on: Accuracy, clarity, appropriate scale, axis labels, title.
15 minutes
2) Once you have drawn the graph answer this question:
Explain which area and which conditions are best for seed production. Use data to provide evidence for your choice. (5)
This is an A* grade question
Literacy – Reading and writing

6. 1 for clarity – show me your graphs
Evaluate it…
1 for clarity – show me your graphs 1 1 1 1
How many marks did you get?

7. Evaluate it… Area B is better than A (1)
Explain which area and which conditions are best for seed production. Use data to provide evidence for your choice.
Area B is better than A (1)
Because it always produces more seeds that A (1)
Root nodule bacteria provide the best conditions (1)
Because they produce more seeds than either the control or with fertiliser. (1)
Correct use of data (1)
How many marks did you get?

8. Evaluate it…