7th Grade Unit 1 Review

A student wants to find out if plants grow better in the sun or shade.  What is the independent variable in his experiment?

• The size of the plants
• The amount of water
• The temperature of the room
• The amount of sunlight

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS1-6

A student wants to test the effect of fertilizer on plant growth. Why should she perform her experiment on multiple plants instead of just one?

• She shouldn't use multiple plants; one is enough.
• Using many repeated trials shows that her results are reproducible.
• Using repeated trials shows no one else can produce her results.
• Using many trials will enable her to see whether the sunlight has any effect.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

During what step of the engineering process would a scientist most likely go to the library?

• defining the problem
• conducting research
• testing and evaluating
• communicating results

What is empirical evidence?

• your opinion
• observations and measurements
• facts
• beliefs

Tags

NGSS.MS-LS1-4

NGSS.MS-LS2-4

The findings of experiments are generally not  accepted until they are...

• Modeled
• Proven
• Replicated
• Solved

The most reliable scientific information comes from...

• reporters
• scientists
• companies
• librarians

This is an example of a 

• Bar graph
• Circle Graph
• Line Graph
• Graphic Graph

Tags

NGSS.MS-PS3-1

Scientific investigations that involve testing a single variable are called...

• models
• theories
• experiments
• laws

Tags

NGSS.MS-PS1-2

The International System of Units (SI) is the standard system of measurement is science.
The SI unit for mass is the

• kelvin
• newton
• kilogram
• second

Based on this circle graph, more students preferred horror movies than comedies.

• True
• False