PreTest

Rene grew bacteria from a person's mouth on special plates in the laboratory. She placed drops of different mouthwashes on bacteria on each plate.

• recognize a problem

• test the hypothesis with an experiment

• form a hypothesis

• draw conclusions

When experimenting with the growth of a plant, a scientist uses three (of the same type of) plants, two different fertilizers, equal light, and equal water. What type of variable is the fertilizer?

• Dependent

• Independent

Tags

NGSS.MS-LS1-5

The independent variable is the ONE thing you _____.

• change
• keep the same
• experiment with
• investigate

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-4

The measurable factor (something you measure) in an experiment is known as the:

• Dependent Variable

• Independent Variable

Walker is testing which fertilizer will grow the tallest grass. The height of the grown grass is the __ variable.

• dependent (measured)

• independent (changes)

A student is planning an experiment to find out how the height from which he drops a ball affects how high the ball bounces. The dependent variable is the _____.

• Diameter of the ball
• Force acting on the ball
• Height that the ball bounces
• Height from which the ball is dropped

Tags

NGSS.MS-PS3-5

Information you obtain through your senses, such as touch, sound and sight.

• observation
• hypothesis
• question
• conclusion

Tags

NGSS.MS-LS1-8

A prediction or guess based on observations.

• data
• scientific process
• hypothesis
• question

Information gathered from your experiment. 

• observation
• variable
• hypothesis
• data

Tags

NGSS.MS-PS1-2

NGSS.MS-PS3-4

A series of steps used by scientists to solve a problem or answer a question. 

• scientific method
• recipe
• data collection
• metric system

Tags

NGSS.MS-PS2-2