CMS Fair Test (Independent or Dependent variables)

In an experiment, one chicken is injected with growth hormone while another chicken is not injected.

This continues for one year.

After one year the chickens are weighed.

Choose the correct combination.

(Hint:

INDEPENDENT VARIABLE IS WHAT YOU CHANGE

DEPENDENT VARIABLE IS WHAT YOU MEASURE

• independent = growth hormone; dependent = weight of chicken

• independent = weight of chicken; dependent = growth hormone

Tags

NGSS.MS-LS1-5

Mosquito repellent is sprayed on one arm.

The other arm is not sprayed.

The number of bites on each arm is recorded after 2 hours.

Choose the correct combination.

(Hint:

INDEPENDENT VARIABLE IS WHAT YOU CHANGE

DEPENDENT VARIABLE IS WHAT YOU MEASURE

• independent = mosquito bites; dependent = mosquito repellent

• independent = mosquito repellent; dependent = mosquito bites

Group A exercises every day for one month.

Group B does NO exercise for one month.

Everyone's weight is measured at the end of the month.

Choose the correct combination.

(Hint:

INDEPENDENT VARIABLE IS WHAT YOU CHANGE

DEPENDENT VARIABLE IS WHAT YOU MEASURE

• independent = exercise; dependent = weight of people

• independent = weight of people; dependent = exercise

Class A reviews for the Science exam.

Class B does not.

Their results are recorded the next day.

Choose the correct combination.

(Hint:

INDEPENDENT VARIABLE IS WHAT YOU CHANGE

DEPENDENT VARIABLE IS WHAT YOU MEASURE

• independent = exam results; dependent = studying

• independent = studying; dependent = exam results

Two different types of cars are travelling at 60 km/h.

Both drivers slam on their brakes at the same time.

The distance it travels until it stops is recorded.

Choose the correct combination.

(Hint:

INDEPENDENT VARIABLE IS WHAT YOU CHANGE

DEPENDENT VARIABLE IS WHAT YOU MEASURE

• independent = car; dependent = distance until it stops

• independent = distance until it stops; dependent = car

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

One group of rats is given a superfood fortified with vitamins.

Another group of rats is given regular food.

The rats are weighed after 6 months.

Choose the correct combination.

(Hint:

INDEPENDENT VARIABLE IS WHAT YOU CHANGE

DEPENDENT VARIABLE IS WHAT YOU MEASURE

• independent = food; dependent = weight

• independent = weight; dependent = food

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-4

One group of 20 cockroaches are sprayed with 50ml of pesticide 1.

Another group of 20 cockroaches are sprayed with 50 ml of pesticide 2.

You count the number of dead cockroaches after 30 minutes.

Choose the correct combination.

(Hint:

INDEPENDENT VARIABLE IS WHAT YOU CHANGE

DEPENDENT VARIABLE IS WHAT YOU MEASURE

• independent = dead cockroaches; dependent = type of pesticide

• independent = type of pesticide; dependent = dead cockroaches

Tags

NGSS.MS-LS2-1

NGSS.MS-PS1-2