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WorksheetsPhotosynthesis experiments
Total questions: 25
Worksheet time: 17mins
Look closely at the setup of the experiment. Does it look like it was set up properly?
Yes - all the plants are the same
Yes - all the plants get some water
No - the lights AND the water are different - only one thing should be changed
No - they should have used all three different kinds of plants
Does it look like this experiment was set up properly?
Yes - all three plants are the same
Yes - all the lights are the same
No - they should have given each plant different amounts of water
No - they should have only changed one thing
Which question is the scientist trying to answer with this experiment?
Under which color light do plants grow best?
How much water makes the plant grow the best?
Does fertilizer help plants grow better?
Can't tell - there are two things changed when there should only be one.
Which question is the scientist trying to answer with this experiment?
What kind of plant grows the best?
How much water is best for plants?
What kind of light do plants grow best under?
Can't tell - two things were changed, and there should have only been one thing changed
Is this experiment set up correctly?
Yes, because only one thing was changed - the light color
Yes, because all science experiments have to have plants in them
No, because the plants all should have different amounts of water.
No, because the plants should not have received no fertilizer
Is this experiment setup correct?
Yes - three different kinds of plants were used
Yes - the lights were all different
No - different light colors AND different plants were used - you are only supposed to change one thing in an experiment
No - each plant should have received different amounts of water
What is being tested in this experiment? What is the scientist trying to find out?
What color of light causes plants to grow better?
How much water should this kind of plant get to make it grow best?
Can plants live without water?
What kind of fertilizer causes plants to grow best?
What is the question that can be answered with this experiment?
What kind of light do plants grow best under?
What kind of plant uses the most water?
Can't tell, because too many things were changed.
How much fertilizer should plants get?
Is this experiment set up correctly?
Yes, because only one thing was changed - the kind of fertilizer
Yes, because water was used
No, because all the plants are the same
No, because each plant should have received different amounts of water
What question is being answered with this experiment?
What kind of fertilizer causes plants to grow best?
What kind of plant grows taller?
How much water is the best amount for this kind of plant?
What color of light is best for plants?
Select the appropriate graph for photosynthetic rate against temperature.
The plant is watered and placed under strong light for four hours. Which graph accurately shows CO2 concentration against time?
Plants A and B are destarched and each placed into a temperature-controlled box with artificial light. After 1 hour, only the leaf from plant A tests positive for starch; plant B tests negative.
Which points on the graph are most likely to reflect the temperatures that plants A and B were kept at?
Point 1: plant A, point 2: plant B
Point 1: plant B, point 2: plant A
Point 2: plant A, point 3: plant B
Point 3: plant A, point 2: plant B
"Describe the graph at point X."
Select the best answer.
At point X, light intensity is high, photosynthetic rate is at its maximum and has stopped increasing.
The rate of photosynthesis is at its maximum at the light intensity of point X.
At point X with high light intensity, rate of photosynthesis is not changing or increasing.
As light intensity continue to increase, the photosynthetic rate does not continue increasing.
Experiment: Does changing the wing shape to make it more narrow affect the distance a paper airplane will fly?
The wing shape is the ___________ variable.
independent
dependent
The students grades are the ___________ variable.
A student is studying the effect of sunlight on plants. The student developed this hypothesis: Plants need light to make food and to grow properly. To conduct a controlled experiment, which method should she use?
Choose two identical plants; put one in the dark and one near sunlight; use the same amount of water; water both regularly
Choose a healthy plant; put it in a dark place; use clean water; water the plant regularly.
Choose two identical plants; put each in the dark for 12 hours and then light for 12 hours; use the same amount of water; water both regularly.
Choose three identical plants; put one in the dark, one near sunlight, and one in the shade, water only the plant in light.
Which of the following is NOT a testable question?
How do rockets work?
Does fertilizer help plants grow bigger?
Does heart rate increase with exercise?
Does the freezing point of water change at different elevations?
What was the dependent variable?
A class was going to build a device that launched blocks by using a spring. They wanted to find out which spring of the three available would launch a block the furthest. They had three different shaped blocks they were testing, each with the same footprint. They kept the distance the spring was compressed the same. The blocks were launched on the same surface.
Is the experiment fair?
This experiment is a fair test because all variables were carefully measured.
This experiment is a fair test because the spring was pulled back the same amount each time
This experiment is not a fair test because the springs used were of different thickness.
This experiment is not a fair test because different shaped blocks were used
Ke Tian sets up an experiment to study the effects of fertilizers on plants. The table shows the data for her set-ups. Which plant is the control group?
Plant A
Plant B
Plant C
Plant D
What can we do to ensure that the results of an experiment is reliable?
Use an accurate measuring instrument
Repeat the experiment
Ensure a fair test is concluded
Ensure only one variable is changed
