Scientific Investigation

the factor that is changed by the scientist in a science experiment.

• dependent variable

• independent variable

• constant

• hypothesis

Tags

NGSS.MS-PS2-2

What must you do before you make a hypothesis?

• Run an experiment

• Make observations

• Form a theory

• Draw conclusions

Which of the following is a testable hypothesis?

• Roses are more beautiful than violets.

• A plant needs at least five hours of sunlight per day to grow.

• Ice cream is delicious.

• Humans will someday land on Mars.

Tags

NGSS.MS-LS1-5

Which of the following is an example of a prediction?

• What will happen if we put 25 pennies on our bridge?

• I think that our bridge will hold 25 pennies because we strengthened it by folding it.

• Our bridge held 25 pennies when we tested it.

• Our bridge did not hold 25 pennies when we tested it.

Series of steps followed by scientists to answer questions.

• Graph

• scientific method

Tags

NGSS.MS-LS1-5

The factor that is deliberately changed or manipulated is

• A theory

• The dependent variable

• The data

• The independent variable

Tags

NGSS.MS-PS2-2

A student set up an experiment to test how much bean plants will grow in soil with salt in it. The student grew 50 plants in one group and 50 plants in the other group. The only thing that can be different in the two groups is the amount of -

• soil in each plant pot

• salt in the soil in each plant pot

• water given to each plant

• fertilizer given to each plant

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

A student is investigating the time it takes for different objects to reach the ground after they are dropped. What is the constant variable in this investigation ?

• weight of each object

• object being dropped

• distance to the ground

• time to reach the ground

Max is doing an experiment on tomato plants. His hypothesis is, "A tomato plant will not grow in a shady area." On which of these relationships did Max base his hypothesis?

• Sunlight causes plant growth

• Warm temperature causes plant growth

• Tall plants cause shade

• New plants need fresh water

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which of the following choices is the correct order of steps in the scientific method?

• Hypothesize - draw conclusions - experiment - analyze data

• Analyze data - hypothesize - experiment - draw conclusions

• Hypothesize - experiment - analyze data - draw conclusions

• Hypothesize - analyze data - draw conclusions - experiment

Tags

NGSS.MS-LS1-5