AnswersFL-2002110-MJ Comprehensive Science 3 Advanced A - FlexHypotheses, Theories, and LawsQuestion 3
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Hypotheses, Theories, and Laws

Question 3 • FL-2002110-M/J Comprehensive Science 3 Advanced A - Flex

For which of these questions could a testable hypothesis be developed? Check all that apply.Do children’s heart rates increase at the same speed when walking uphill?Is experimenting with moldy bread more fun than experimenting with yogurt cultures?Does temperature affect how long blood can be stored?How does moisture affect the growth of moss on a tree?Which of Leeuwenhoek’s microscopes was the coolest?

Answer
A
Do children’s heart rates increase at the same speed when walking uphill?
B
Is experimenting with moldy bread more fun than experimenting with yogurt cultures?
C
Does temperature affect how long blood can be stored?
D
How does moisture affect the growth of moss on a tree?
E
Which of Leeuwenhoek’s microscopes was the coolest?

Explanation

A testable hypothesis predicts how measurable variables are related. Children’s heart rate and walking uphill speed can be measured, as can storage temperature and the time blood remains usable. Moisture and moss growth can also be measured. “More fun” and “coolest” are subjective judgments, so those questions do not lead to clear, measurable tests.

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