Nature of Science

An educated guess or testable prediction is a

• theory

• law

• hypothesis

• conclusion

Tags

NGSS.MS-LS1-5

Observations that deal with a number or amount are called

• qualitative

• quantitative

The part of an experiment that doesn't change is a _____.

• control/constant

• independent variable

• conclusion

• dependent variable

The variable that is changed by the scientist to test a hypothesis is called the _________________________ .

• dependent variable

• independent variable

• control

Tags

NGSS.MS-PS2-2

Which is the best description of the dependent variable?

• the variable that is changed by the scientist

• the measurable variable

• the variable that does not change

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-4

What is the affect of salt water on the the height of blades of grass?

What is the independent variable in the above question?

• salt water

• height

• average

• affect

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

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

Tags

NGSS.MS-PS3-4

Students wanted to see if the type of material affected the temperature after being placed under a heat lamp for 10 minutes.

What is the dependent variable for this investigation?

• Type of material (rocks, sand etc)

• Temperature after 10 minutes

• Time under the lamp

• Heat lamp, amount of material

Tags

NGSS.MS-PS3-4

You will want your experiment to have ____ independent variable(s) in it for the experiment to be valid.

• 1
• 2
• 3
• 4

Tags

NGSS.MS-PS2-2

A scientist hypothesizes the the temperature at which an alligator's egg is incubated will determine whether the alligator will be male or female. The dependent variable is

• the size of the baby alligators
• the gender of the baby alligators
• the incubator
• the temperature

Tags

NGSS.MS-LS1-5