Hypothesis Formulation
Biology ⇒ Scientific Inquiry and Experimental Design in Biology
Hypothesis Formulation starts at 6 and continues till grade 12.
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See sample questions for grade 12
A researcher hypothesizes that caffeine affects heart rate. What is the dependent variable in this hypothesis?
A researcher wants to test if fertilizer affects the number of flowers produced by a plant. Write a suitable hypothesis.
A scientist hypothesizes that salt concentration affects the rate of osmosis in potato cells. Suggest a possible null hypothesis for this experiment.
A scientist observes that a certain bacteria grows faster at higher temperatures. Write a null hypothesis for an experiment testing this observation.
A researcher hypothesizes that caffeine affects heart rate. What is the dependent variable in this hypothesis?
A researcher wants to test if fertilizer affects the number of flowers produced by a plant. Write a suitable hypothesis.
A scientist hypothesizes that salt concentration affects the rate of osmosis in potato cells. Suggest a possible null hypothesis for this experiment.
A scientist observes that a certain bacteria grows faster at higher temperatures. Write a null hypothesis for an experiment testing this observation.
Which of the following best describes a testable hypothesis? (1) A statement that can be supported or refuted by experimental evidence (2) A question about the natural world (3) An opinion about a scientific topic (4) A summary of previous research
Which of the following is a null hypothesis? (1) If fertilizer is added, plant growth will increase. (2) Fertilizer has no effect on plant growth. (3) Fertilizer increases plant growth. (4) Plant growth is affected by fertilizer.
Which of the following is a poorly formulated hypothesis? (1) If water temperature increases, then fish will swim faster. (2) Fish like warm water. (3) If fish are exposed to light, then their activity level will increase. (4) If pH decreases, then plant growth will decrease.
Which of the following is an example of a hypothesis that can be tested experimentally? (1) If the pH of water is decreased, then the survival rate of fish will decrease. (2) Fish are happier in clean water. (3) Water is important for fish. (4) Fish are beautiful animals.
Fill in the blank: A hypothesis is often written in the form 'If ________, then ________.'
Fill in the blank: A hypothesis should be ________, meaning it can be proven false through experimentation.
Fill in the blank: A hypothesis that does not predict the direction of the relationship between variables is called a ________ hypothesis.
Fill in the blank: A hypothesis that predicts a relationship between two variables is called a ________ hypothesis.
True or False: A hypothesis can be based on intuition alone, without any prior observation or research.
True or False: A hypothesis can be changed or revised based on new evidence.
True or False: A hypothesis can be proven true beyond all doubt.
True or False: A hypothesis can be tested by both experimental and observational studies.
