Controlled Experiment Variables Review

A study was done to find if different tire treads affect the braking distance of a car.

• Independant Variable

• the type of car

• Dependant Variable

• tire treads

• Constant

• breaking distance

Tags

NGSS.MS-PS2-2

The time it takes to run a mile depends on the person's running speed.

• Dependant Variable

• time it takes

• constant

• distance (one mile)

• Independant Variable

• running speed

The height of bean plants depends on the amount of water they receive.

• Indwpendant Variable

• height of plant

• Dependant Variable

• amt of water

• Constant

• type of bean plant

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

The higher the temperature of the air in the oven, the faster a cake will bake.

• Dependant Variable

• temp of oven

• Constant

• time to cook

• Idenpendant Variable

• type of cake

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Lemon trees receiving the most water produced the most lemons.

• independant varaible

• number of lemons

• Constant

• amt of water

• Dependant Variable

• Type of tree

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-4

An investigation found that more bushels of potatoes were produced when the soil was fertilized more.

• Dependant Variable

• types of potatoes

• Constant

• number of potatoes

• Independant Variable

• amt of fertilizer

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Students measured the temperature of the water at different depths in Lake Skywalker and found that the temperature varied.

• Constant

• temperature

• Dependant Variable

• Location in the lake

• Independant Variable

• depth in the lake

Tags

NGSS.MS-PS1-4

The amount of pollution produced by cars was measured for cars using gasoline containing different amounts of lead.

• Dependant Variable

• type of car

• Constant

• amt of lead

• Independant Variable

• amt of pollution

Four groups of rats are first massed and then fed identical diets except for the amount of vitamin A they receive. Each group gets a different amount. After 3 weeks on the diet, the rats' masses are measured again to see if there has been a decrease.

• Independant Variable

• Group of rats

• Dependant Variables

• mass of the rats

• Constant

• amt fo vitamin A

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Two groups of students were tested to compare their speed working math problems. Each group was given the same problems. One group used calculators and the other group computed without calculators.

• Independant Variable

• Type of math probelms

• Constant

• speed

• Dependant Variable

• with or without calculators