Science 7 Unit 1 Review

What part of the scientific method is this?

Susan said, “If I fertilize my geranium plants, they will blossom.”

• recognize a problem

• test the hypothesis with an experiment

• form a hypothesis

• draw a conclusion

What part of the scientific method is this?

Jose saw bats catching insects after dark. He asked, “How do bats find insects in the dark?”

• making observations and questioning

• test the hypothesis with an experiment

• form a hypothesis

• draw a conclusion

A student wants to test the effects of type of exercise on heart rate. What is the dependent variable?

• heart rate

• type of exercise

• amount of exercise

• time of day exercise occurs

Squidward found new reeds to try for his clarinet. He used an APPLAUSOMETER to measure applause after playing the song Under the Sea with each reed. The results were put in the table.

What was a constant/controlled variable?

• The Song

• The Reed

• The Applause

Simon measure the metal piece to be 7.1 cm long. This means that

• the 7 is the estimated (uncertain) digit

• the 1 is the estimated (uncertain) digit

• both 7 and 1 are certain digits

• both 7 and 1 are estimated (uncertain) digits

Convert the following:

648 g = ____ mg

• 6,480

• 64,800

• 648,000

• 64.8

Convert the following:

240 cm = ___________ m

• 2400

• 24

• 2.4

• 0.24

Which of the following is a scientific observation? 

• The potato is brown in color.
• The potato tastes the best.
• The potato may cause allergies.
• The potato smells funny. 

Why should an experiment be repeated?

• to form a hypothesis
• to reduce the chance of error
• to change controls
• to identify the problem

Tags

NGSS.MS-PS2-5

Which is the dependent variable in Amelia's experiment?

• the number of bean plants in each group 
• the amount of water given daily to each plant 
• the height of each bean plant 
• the amount of fertilizer given to each group of bean plants

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1