Scientific Method

"I think orange juice will stunt the growth of a plant."

What is the dependent variable in the experiment?

• The growth of the plant

• The amount of orange juice

• The plant without orange juice

• The location of the plant

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

"A hard boiled egg will float in a container of water if salt is added to the water."

What is the independent variable?

• The salt

• The boiled egg

• The egg floated

• The container of water

Leslie conducted an experiment testing plant growth under red, blue, and yellow lights. Her hypothesis is: "If plants are grown under different colored lights, then the plants under red lights will have the most growth."

What is the independent variable?

• The different colored lights

• The amount of plant growth

• The red light

• The experiment

Tags

NGSS.MS-LS1-5

The testable question in a science investigation reads: "How does the size of a motor affect the speed of the vehicles?" What is the independent variable in the question?

• the sizes of motors

• the brands of motors

• the varying speeds

• the types of vehicles

Tags

NGSS.MS-PS2-2

As the amount of exercise for a dog increases, the dog's behavior becomes calmer. What is the dependent variable in this hypothesis?

• The dog's behavior

• the amount of exercise

• the dog

• the dog's owner

A hypothesis states: "If a battery's voltage is increased, sending greater current to an electromagnet, then the strength of the electromagnet will increase." What is the dependent variable in this statement?

• strength of electromagnet

• electromagnet

• electrical energy

• battery power

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

Which statement does NOT describe an independent variable?

• The responding variable

• The part that is changed by the scientist

• The factor that is being manipulated

• The part of the experiment that is being tested

Leslie tested if plants grew towards red light better than white light.

What is the dependent variable in the experiment described above?

• The direction of plant growth

• The location of the plants

• The red light

• The white light

Tags

NGSS.MS-LS1-5

If Lacey pours bleach into a washing machine full of clothes, then the clothes will have bleach spots on them after they are washed.

What is the independent variable in the experiment above?

• The bleach

• The washing machine

• Lacey

• The bleach spots

If a man leaves his car running while he goes to the bank, then his car will run out of gas.

What is the dependent variable in the experiment?

• The car will run out of gas

• The bank

• The man

• The car running