Photosynthesis Worksheets Page 3
ADVERTISEMENT
1
2
3
4Canadian Pondweed -
Bubbles
bubble experiment
Water
You need:
•
living, clean pondweed from
a pet shop
•
a test tube
•
a ruler
•
a timer
•
water (containing 4 - 5 teaspoon
measures of bicarbonate of soda).
What to do:
1) Put the pondweed into
the test tube.
2) Put the test tube in a beaker
and pour in the water
(containing bicarbonate of soda).
3) Look for bubbles coming from
the cut end of the pondweed.
The bubbles will float upwards.
4) What do you think the bubbles
Pondweed
are filled with?
Answer:
Do you think that changing the amount of light a plant gets will
affect photosynthesis?
You can investigate the effect of light strength on the RATE of
photosynthesis (how quickly photosynthesis proceeds) by counting the
number of bubbles of gas released per minute by the plant.
Look back at the equation for
photosynthesis on the first page of this
leaflet. The equation gives you the name
of the gas that is being produced.
The gas bubbles are a by-product of
photosynthesis, so the quicker they are
produced, the quicker the rate of
photosynthesis must be. Draw a picture
of your experiment and use the table
on page 4 to record your results.
3
ADVERTISEMENT
0 votes
Related Articles
Related forms
Related Categories
Parent category: Education