SOL 1: Variables Part 1

"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

The title of an experiment is: "How the Number of Batteries in an Electromagnet Will Affect the Number of Nails it Will Pick up." Which of these statements is correct?

• The independent variable is the number of nails.

• The dependent variable is the number of batteries.

• The dependent variable is the electromagnet.

• The independent variable is the number of batteries.

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

The title of an experiment is: "Can the strength of an electromagnet be altered by changing the amount of wire wrapped around its core?" Which of the following statements about this experiment is correct?

• The independent variable is the amount of wire.

• The independent variable is the electromagnet.

• The dependent variable is the battery.

• The independent variable is the core.

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

What is the control of the experiment described above?

• The white light

• The amount of light

• The red light

• The location of the plant

The title of an experiment is: "The number of wire turns affects the number of nails an electromagnet will pick up." From the table below, which option shows the correct independent and dependent variable for this experiment?

• option 4

• option 2

• option 3

• option 1

Tags

NGSS.MS-PS2-5

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