Identifying Cause and Effect

Matias wants to see if his dog will lose weight if he takes his dog for a walk twice a day instead of just once a day. What is the independent variable in this situation?

• The breed of dog

• How many times they go for a walk each day

• The dog's weight

• How fast they walked

Tags

NGSS.MS-ETS1-1

How many variables can be tested in a controlled experiment?

• one

• two

• three

• as many as possible

Tags

NGSS.MS-PS2-2

What is the independent variable (cause) in this experiment?"Will fish school or group together more if a predator is present?"

• whether there is a predator or not

• number of fish school together

• type of predator

• type of fish

Tags

NGSS.MS-LS2-2

Janet wants to see whether drinking coffee will improve productivity. What is the independent variable in this experiment (cause)?

• increase productivity

• Having coffee or not

• the brand of coffee

• the time drinking the coffee

Matias wanted to see if his dog would lose weight if he took the dog for a walk twice a day instead of just once a day. What is the independent variable in this situation?

• The breed of dog

• The dog's weight

• How many times they go for a walk each day

• How fast they walked

A factor or condition that is changed on purpose is called the

• control variable

• dependent variable

• independent variable

How many variables can be tested in a controlled experiment?

• one

• two

• three

• as many as possible

Tags

NGSS.MS-PS2-2

Dr. Eversole sets up an experiment on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, what is the independent variable?

• Type of plant

• Water, apple juice, milk

• Plant growth

Tags

NGSS.MS-LS1-5

Matias wanted to see if his dog would lose weight if he took the dog for a walk twice a day instead of just once a day. What is the dependent variable in this situation?

• The breed of dog

• The dog's weight

• How many times they go for a walk each day

• How fast they walked

Ariel wanted to find out if thingamabobs or thingamajigs were better for brushing her hair. What is the dependent variable in this situation?

• What Ariel used to brush her hair

• How well her hair was brushed

• The shampoo she uses

• How often she brushes her hair