Life Science Final Exam Review

Jack makes a hypothesis: Acid rain prevents corn seeds from sprouting. To test this, he waters one corn seed with tap water and a second corn seed with acidic water. How should Jack improve his experiment?

• He should determine what his independent variable is.

• He should determine what his dependent variable is.

• He should make a larger sample size.

• He should make a control group.

Tags

NGSS.MS-LS1-5

Jack makes a hypothesis: Acid rain prevents corn seeds from sprouting. To test this, he waters one corn seed with tap water and a second corn seed with acidic water. Identify the independent variable in this experiment.

• tap water

• corn seeds

• sprouting

• acidic water

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Jack makes a hypothesis: Acid rain prevents corn seeds from sprouting. To test this, he waters one corn seed with tap water and a second corn seed with acidic water. Identify the dependent variable.

• tap water

• corn seeds

• sprouting

• acidic water

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Jack makes a hypothesis: Acid rain prevents corn seeds from sprouting. To test this, he waters one corn seed with tap water and a second corn seed with acidic water. Identify the control group in this experiment.

• The corn seed given tap water

• The corn seed given acidic water

Tags

NGSS.MS-LS1-5

What step does every scientific experiment begin with?

• hypothesis
• question/problem
• procedures
• conclusion

If plants are exposed to sunlight, then they will grow taller.
What part of the scientific method is this an example of?

• Procedure
• Hypothesis
• Question
• Results

Tags

NGSS.MS-LS1-5

Why do scientists use the scientific method?

• To make sure they get credit for their discoveries.
• To make sure their results are valid and can be performed by other scientists.
• So that other scientist don't get mad at them

The summary at the end of an experiment that explains the results. 

• conclusion
• procedures
• materials
• hypothesis

Observations made during an experiment are considered:

• data
• problems
• conclusions
• questions

What is a hypothesis?

• an educated guess stating what you believe will be the result of your experiement
• a random guess
• a statement of the outcome of your experiment
• step by step directions for your experiment