Unit 1 Experimental Design Review

Students used various temperatures of water to see which one dissolved candy faster. 
What was the independent variable?

• Amount of Candy
• Amount of Water
• Temperature of Water
• Time for Candy to Dissolve

A scientific question was asked: What is the affect of salt water on the the height of blades of grass?

What is the independent variable is being tested?

• salt water

• height

• average

• affect

Tags

NGSS.MS-LS1-5

If plants receive more water, the number of leaves will increase. 
This is an example of a(n)...

• Testable Question
• Hypothesis
• Variables
• None of the above

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

In this graph, what is the dependent variable? 

• Walla Walla Island
• Time
• Number of Deer

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

In this graph, what is the independent variable? 

• Population
• Day
• Species 5

Tags

NGSS.MS-LS2-1

How many variables should you change in an experiment?

• none
• 1
• 2 or more
• depends on the type of experiment

The variable in an experiment deliberately changed by the scientist. The variable being tested.

• dependent variable
• independent variable
• data
• control group

Jeff is 7 feet 2 inches tall. What type of observation is this?

• Qualitative
• Quantitative

The cake has a sweet smell. What type of observation is this?

• Qualitative
• Quantitative

Tags

NGSS.MS-LS1-8

If I water the plant more often, then it will grow taller.  Name the dependent variable.

• The amount of water.
• The amount of soil.
• The height of the plant.
• The amount of water.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1