WorksheetsSetting up tests and experiments
Total questions: 11
Worksheet time: 11mins
Min Enn wanted to find out if the amount of water will affect the rate of evaporation. What variable must she change?
(a)
Tejas wanted to find out if the height of a ramp will affect the distance travelled by a toy car. What variable must Tejas measure to conclude the results of his experiment?
(a)
Fadiyah wanted to find out if the amount of carbon dioxide affects the rate of evaporation in water plants. What should she do to setup her experiment?
Add baking soda in setup A but not setup B.
Add more water in setup A.
Change the amount of light in setups A and B.
Use two different plants for her setups.
Nurul wanted to find out if the mass of objects affects the time taken for it to reach the ground. What variable(s) should Nurul keep the same for her experiment?
time taken for objects to reach the ground
mass of the objects
shape of the objects
height which the objects were dropped
Florence set up an experiment to find out if the amount of light affects the rate of photosynthesis. She left two similar plants in a dark room. The plants are placed at different distances from a same light source How does placing the plants in a dark room ensures that the test is fair?
It ensures that the light comes from the same light source.
It ensures that the plants are the same.
It ensures that the rate of photosynthesis are the same.
It ensures that the plants can take in the same amount of air.
A fair test can be created using what step(s)?
Change only one variable
Measure the variable for the results
Keep the other variables the same
Repeat the experiment
Alem wants to know what is the favorite food of his pet mouse. Which experimental set up will he perform?
A
B
C
D
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
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.
If you were one of the members of the class what would you do to make it a fair test?
The thickness of the spring must be kept constant.
The shape of the blocks must be kept constant.
The distance of the spring must be different.
The surface must be different
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
