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15
Experiment
time!
Sunlight and plant growth
Aim:
Discover how sunlight affects plant growth.
Hypothesis:
Answer these questions in your notebook before you do
the experiment.
a)
How do you think sunlight a ects plant growth?
b)
Why?
Method:
1.
Label each plant, for example:
window
or
cupboard.
2.
Put the plants around your classroom. Make sure that at least
one plant is in a very sunny place and another in dark place with
no sunlight at all. See picture
a
.
3.
Water all the plants. See picture
b
.
Results:
1.
A er one week, collect the plants and answer these questions.
a)
What di erences can you see between
the three plants? For example,
examine the height, and the appearance
of the leaves.
The plant in the ... did/didn’t grow.
2.
Compare your hypothesis with the answers to these questions.
a)
Are they similar or di erent?
b)
What have you learned?
Plants need ... to ...
Materials:
• 3 plants of the same type
• your classroom!
b)
Has sunlight a ected plant growth?
How do you know?
Sunlight has/hasn’t affected growth.
The plant ... is bigger/greener/healthier than ...
a
b