Page 9 - 新思维科学活动用书9 样章

1 Photosynthesis and the carbon cycle

5 Complete the bar chart to show Marcus’s results.

red green blue white
Colour of light

6 Write down a conclusion that Marcus can make from his results.

Exercise 1.1C Turning an idea into a hypothesis that can
be tested

Challenge

In this challenging task, you will choose an idea and then turn it into a hypothesis that can be tested
by scientific experiment. Then you will write a plan for the experiment.

Here is an idea about water plants and photosynthesis.

Idea: Carbon dioxide is one of the raw materials for photosynthesis. We can provide extra carbon
dioxide to a water plant by bubbling carbon dioxide gas into the water. This could allow the water

plant to photosynthesise faster.

8