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a student noticed that different trees give different amounts of shade on a sunny day. she
decided to investigate three species of tree-oak, sycamore and ash. she thought that the more
shading, the better the tree was at gathering light for photosynthesis. she would use a light meter
to record the light levels. the student had many things to consider when deciding on a method
(a) should she take readings in direct sunlight as well as under the trees?
explain your
(2)

(b) describe the weather that would be most appropriate when collecting the data.
(c) should the student collect data from one or more than one position? explain your answer.
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(d) explain why it would be necessary for the student to take as many readings as she could
under the trees
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(@) what type of independent variable has the student decided to use?
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( what type of dependent variable has she decided to use?
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ada science nelson thornes lid 2006