1.2 CK Check - Scientific Method & Variables

The variable that is measured in an experiment is called the ​ (a)   variable.

The variable that must be controlled or kept the same in an experiment is called the ​ (b)   .

The variable that is changed on purpose in an experiment to test something is called the ​ (c)   variable.

• dependent
• constant
• independent

Tags

NGSS.MS-PS2-2

What is the independent variable in a controlled experiment?

• The thing that responds to the change

• The thing you're testing

• The one thing that you change or manipulate

• The thing you're observing and measuring

Tags

NGSS.MS-LS1-5

What is the dependent variable in a controlled experiment?

• The thing that responds to the change

• The thing that you change or manipulate

• The thing you're testing

• The thing you're observing and measuring

Tags

NGSS.MS-LS2-1

NGSS.MS-PS1-2

In the hypothesis 'If students study 15 minutes a night, then they will have higher test grades than those who don't study at all', what is the independent variable?

• Test grades

• Study time

• Students

• Elvis

In the hypothesis 'If people who have headaches take aspirin, then they will get relief faster than those who don't take aspirin for headaches', what is the dependent variable?

• Headaches

• People

• Aspirin

• Relief time

Tags

NGSS.HS-PS1-5

In the hypothesis 'If a brand name light bulb is left on continuously, then it will burn longer than a bargain brand light bulb used in the same manner', what is the dependent variable?

• Brand name light bulb

• Burn time

• Continuous usage

• Bargain brand light bulb

What is the abbreviation for independent variable?

• MV

• CV

• DV

• IV

Tags

NGSS.MS-PS2-2

What is being changed in this experiment?

• ramp height
• the speed that the ball rolls
• type of ball

The ​ ​ (a)   variable ​ in an experiment are the things that need to stay ​ ​ (b)   . This is ​ (c)   so that results will be ​ (d)   .

• measures
• control
• independent
• dependent
• constant
• test
• cause and effect
• important
• valid
• data

Answer explanation

Remember, "dependent" starts with "d" just like "data". And to collect data you need to measure it! It is the result of the independent variable being changed.

In an experiment, a scientist is looking at how daily water affects bonsai growth. What are the following components of the experiment? Match the components with the correct vocabulary word.

• Independent Variable

• Bonsai growth

• Constant

• Air quality in room where bonsai is

• Dependent Variable

• Daily water

• Constant

• Light given to bonsai

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-4