Scientific Variables

How does the amount of sunlight each tomato plant gets, affect the number of tomatoes that grow on them?

The amount of sunlight is...

• independent variable

• dependent variable

• controlled variable (constant)

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

How does the type of music playing affect a person's heartrate?

A person's heartrate is...

• independent variable

• dependent variable

• controlled variable (constant)

Tags

NGSS.MS-LS1-8

Which type of stain remover can remove a grass stain the most?

The amount of stain remover you use is...

• independent variable

• dependent variable

• controlled variable (constant)

Tags

NGSS.MS-PS1-2

How does adding coffee grounds to soil affect how tall a plant grows?

The type of plant is...

• independent variable

• dependent variable

• controlled variable (constant)

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

A teacher gives one group of students candy before a test, and does not give another group of students candy before a test. He compares their scores to see if candy before a test improves their grades.

What is the independent variable?

• The student test scores

• The test they are taking

• Whether or not they get candy.

You drop a tennis ball from three different heights: 1 meter, 2 meters, and 3 meters above the ground. You measure to see how high the ball bounces.

What is a controlled variable (constant)?

• The ball you use

• The height you drop the ball from

• The height the ball bounces

What type of container keeps my turkey sandwich the coldest in my lunch box during the school day? Plastic container, plastic bag, or aluminum foil?

What is the dependent variable?

• The type of container

• The sandwich

• The temperature of my sandwich

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

What type of dog food will help my very skinny dog gain the most weight?

What is a controlled variable (constant)?

• The type of dog food

• The amount of food given to the dog

• The amount of weight gained

Tags

NGSS.MS-LS1-7

Does the color of the water balloon affect how much water it will hold before it bursts?

The different colors of water balloons is the...

• controlled variable (constant)

• independent variable

• dependent variable

What color light bulb helps plant seeds sprout the fastest?

What is the dependent variable?

• red light, blue light, green light, white light

• the speed that the seeds sprout

• how much water all of the plants receive

Tags

NGSS.MS-LS1-5