Year 7 Hypotheses and Variables

Every hypothesis begins with what word?

• Does
• If
• Which
• Then

Does the brand of shoes affect the jumping height?

Which hypothesis is incorrect?

• If the subject wears Adidas, then the subject will jump the lowest.
• If the subject wears high heels, then the subject will jump the highest.
• If the subject wears Jordan, then the subject will jump the highest.
• If the subject wears Nike, then the subject will jump the lowest.

Does the amount of water affect the plant's height?

Which hypothesis is correct?

• If the plant receives 20ml of water, then the plant will grow the shortest.
• The plant will receive 20 ml of water, then the plant will grow the tallest.
• If the plant receives, then the plant will grow the tallest.
• If the plant receives 10 ml of soda, then it will grow tall.

How does a hypothesis begin?

• After writing procedures

• After making observations and doing research on the topic of interest

• After buying materials for an experiment

• After communicating your results

A hypothesis is

• a random guess

• a testable explanation that answers a question

• an experiment

• A prediction

Scientists base their hypothesis only on their observations

• True

• False

A hypothesis is based on observations and research

• True
• False

Complete the hypothesis:
If I eat too much....

• then I will get an upset stomach
• I will get an upset stomach
• it's bad for me
• nothing will happen

What two words does every hypothesis need to have?

• if and because
• because and then
• If and then
• first and then

________________, then I will be clean.

• I will take a shower
• If I take a shower
• Because I take a shower
• Since I took a shower