Variables and Hypothesis
• Three variables:
• Manipulated : is changed (we
• Responding : changing
• Constant : kept constant
• Hypothesis: relationship between
manipulated and responding variables.
Examples of hypothesis:
• You change the temperature of water to
see if there is any changes to the volume
• The more temperature, the less volume
1. a) i. The temperature
ii. Rate of photosynthesis
b) The higher the temperature, the
higher the rate of
2. a) i. The length of thread
ii. Time taken
iii. Type of pendulum/number of
b) The longer the thread, the longer
time take to oscillate.
1. a) i. The weight of load
ii. Length of spring
iii. Type of load/ spring
b) The heavier the load, the longer the spring.
c) Hypothesis is accepted. The heavier the
load, the longer the spring.
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