Energy Chapter 1: Energy in Food
We have complete Chapter 1 today.
Some mis-conceptions in this Chapter.
1) Food only provides us with energy.
- Some types of food contain vitamins and minerals. They are not sources of energy but essential to help us maintain good health.
2) Plants can only use light energy from the Sun to carry out photosynthesis.
- Besides light energy from the Sun, plants can also use visible light, e.g. artificial light from a bulb, to carry out photosynthesis.
3) Plants respire only at night and photosynthesize only during the day (when there is light)
- Plants respire all the time (with or without light) and photosynthesize only in the presence of light.
4) Plants get most of their food from the soil. Fertilisers provide more food for the plant.
- Plants only obtain water and minerals from the soil. Fertilisers do not provide food for the plant. They enrich the soil with minerals essential for healthy plant growth.
Observations made with your food items:
Homework: Energy Activity Book
Complete pg 3
Complete pg 8-12
Make use of the notes on pg 4-6 to help you do the questions.
This task is due tomorrow, 4 Feb
Homework: NSB - Table of differences between photosynthesis and respiration
Show differences in the following areas:
- Define the process
- Where it occurs
- Factors needed for process to take place
- What it produces as the end product
- When it occurs
This task is due next week so that you can refer to your NSB notes for CA1 revision over the long weekend.
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