Nature of Science

Quantitative observations are based on ....

• measurements

• words

• opinions

• expressions

Qualitative observations depend mostly on our senses.

• True

• False

The plant has grown 4 cm since yesterday.

• Qualitative
• Quantitative
• Both
• Neither

Which observation is quantitative?

• It is 5 cm long
• It is smooth
• It looks red
• It is dry

The variable that is being tested or changed

• independent variable
• dependent variable
• control variable

The variable that is being measured

• independent variable
• dependent variable
• control variable

The variable that is kept the same to make sure results are caused by the thing being tested

• independent variable
• dependent variable
• control variable

Scientific Question:  Does playing video games improve reaction time?
What is the dependent variable?

• playing video games
• reaction time
• type of video game

An Educated Guess

• hypothesis

• observation

• experiment

• variable

Something you find out about objects, events, or living things using your 5 senses

• hypothesis

• observation

• experiment

• variable