Scientific Inquiry Review

A good hypothesis should NOT be...

• a prediction about what will happen in an experiment

• written as a statement

• a prediction about the relationship between variables

• written as a question

Tags

NGSS.HS-PS1-2

Which of the following statements could be a hypothesis?

• If the average number of chloroplasts in euglena decreases, will less nitrate be needed in each tank?

• If the nitrate concentration is increased, then the euglena will have a lower average number of chloroplasts.

• If the number of euglena in a tank increases, will more nitrates be produced?

• If the nitrate concentration and sunlight is reduced, then the average number of chloroplasts in euglena will be reduced.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-4

What is the dependent variable?

• the variable that you control or change in the experiment

• the variable that you measure

Tags

NGSS.MS-PS2-2

What is the independent variable?

• the variable that you control or change in the experiment

• the variable that you measure

Tags

NGSS.MS-PS2-2

You are doing an experiment recording the growth of plants under different amounts of sunlight. What is the dependent variable?

• The sunlight
• The growth
• The experiment
• The amounts of photons

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS1-6

A variable that never changes is known as a 

• constant
• independent variable
• dependent variable
• control

Tags

NGSS.MS-PS2-2

"Will ice melt faster in salt water?", is an example of a

• Hypothesis
• Question
• Dependent variable
• Control

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

"Ice will melt faster in salt water.", would make a good

• Hypothesis
• Question
• Analysis
• Conclusion

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

What is the independent variable for the hypothesis: If ice melts in salt & fresh water, then it will melt faster in salt water.

• The amount of water
• The melt time
• The size of the ice cube
• The amount of salt

Tags

NGSS.MS-PS3-4

What is the dependent variable for the hypothesis: If ice melts in salt & fresh water, then it will melt faster in salt water.

• The melt time
• The amount of salt
• The fresh water
• The size of the beaker