Scientific Method Review

Ben makes five paper helicopters with different wing lengths. He drops them the same way from a height of two meters for five trials each. He records the amount of time it takes for each helicopter to fall to the ground.

What is the independent variable?

• Dropping the same way

• Wing Length

• Amount of time it takes the helicopter to hit the floor

• Dropping from the same height

This step of the scientific method is a testable guess or a prediction. 

• Hypothesis
• Research
• Observation
• Conclusion

The leaves on the tree are turning brown. This is an example of

• Quantitative Observation

• Qualitative Observation

• Neither Qualitative nor Quantitative Observation

• Inference

In an experiment, the variable that is manipulated by the scientist is called the ___.

• control variable

• independent variable

• dependent variable

• responding variable

Tags

NGSS.MS-PS2-2

There are 10 stripes on a caterpillar. This is an example of

• Quantitative observation

• Qualitative observation

• Both

• Neither

An experiment was performed to test the effects of different types of fertilizers on the number of tomatoes produced by one type of tomato plant. What is the independent variable in this investigation?

• The color of the plant

• The type of fertilizer

• The number of tomatoes

• The type of plant

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Which one of these is a testable question?

• Do larger or smaller seeds make prettier flowers?

• Does the size of the pot affect the height of the plant?

• Will my plant grow?

• Which planet is the most interesting to study?

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Which one of these statements is good hypothesis?

• Adding sugar to the water in the birdfeeder will attract lots of hummingbirds.

• If I add sugar to the water in the birdfeeder, then lots of hummingbirds will come because humming birds like sugar.

• Hummingbirds like water that's very sweet.

• If the amount of sugar added to the water in the birdfeeder is increased, then the amount of hummingbirds will increase because humming birds like water.

The independent variable is the ONE thing you _____ during an experiment.

• change
• keep the same
• experiment with
• investigate

Tags

NGSS.MS-PS2-2

Which is a good example of a hypothesis for the following scientific question, "Does playing violent video games lead to higher blood pressure?"

• Playing violent video games gives people higher blood pressure.

• If you have higher blood pressure, then you play violent video games.

• If you play violent video games you will have higher blood pressure.

• If you play violent video games, then you will have higher blood pressure.