Nature of Science

Justin blows his nose, but mucus seems to leak through the tissue.  He decides to test which tissue holds up the best while sneezing.  What is the independent variable?

• sneezing
• Justin
• amount of tissue
• type of tissue

Mr. McNeice wanted to know if different types of music affected people's heart rates, so he played different music and checked their pulses.  What is the dependent variable?

• type of music
• heart rate
• how long they listend to music
• Mr. McNeice

This is the outcome of the experiment. We get data and results from this.

• Independent Variable
• Dependent Variable
• Control
• Constant

Tags

NGSS.MS-PS1-2

How many independent variables should be tested at a time in a scientific investigation?

• none
• one
• two
• three

Which is the dependent variable in Amelia's experiment?

• the number of bean plants in each group 
• the amount of water given daily to each plant 
• the height of each bean plant 
• the amount of fertilizer given to each group of bean plants

Tags

NGSS.MS-LS1-5

The variable that is changed on purpose is: 

• Control
• Dependent
• Independent
• Outcome

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-4

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

• Dependent
• Independent
• Control
• Outcome

Tags

NGSS.MS-ETS1-1

Which of the following might lead to the changing of a scientific idea?

• A scientist describes an experiment to a group of students
• A scientist gets the same results when repeating an experiment a second time
• a scientist gets results that do not fit a current idea and other scientists find his results are valid
• a scientist has to redo her experiment because she finds the correct procedure was not followed

Tags

NGSS.MS-PS1-2

During a scientific investigation which step will a scientist likely perform first?

• form a conclusion
• experiment
• define the problem

I want to see how the amount of water affects plant growth.  What is the independent variable?

• amount of water
• plant growth
• type of plant
• soil type

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1