IV DV Practice

Sally would like to determine which solution dissolves a peppermint the fastest. She places one peppermint in gatorade, one in tap water, and one in vinegar. She times each cup to determine which one dissolves the fastest. What is the dependent variable?

• the peppermint

• the liquid

• the time it takes to dissolve

• how much liquid is in each cup

A study was done to find if different tire treads affect the braking distance of a car. Which is the independent variable?

• braking distance

• car

• tire treads

• distance and tire

The higher the temperature of the air in the oven, the faster a cake will bake. Which is the dependent variable?

• oven

• temperature of the oven

• cake mix

• time it takes for cake to bake

Tags

NGSS.MS-PS1-4

Students measured the temperature of the water at different depths in Lake Skywalker and found that the temperature varied. Which is the dependent variable?

• depths

• temperatue and lake

• Lake Skywalker

• temperature

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The amount of pollution produced by cars was measured for cars using gasoline containing different amounts of lead. Which is the independent variable?

• amount of pollution

• cars

• amount of lead

• gasoline and amount of lead

Researchers studied the effect of different light intensities on the growth of algae. Which is the dependent variable?

• light intensities

• growth of algae

• researchers

• algae

Tags

NGSS.MS-LS1-5

A scientist measured the rate of photosynthesis in plants at different temperatures. Which is the independent variable?

• rate of photosynthesis

• plants

• different temperatures

• scientist

Tags

NGSS.MS-LS1-6

In an experiment to test the effect of fertilizer on plant growth, what is the controlled variable?

• amount of fertilizer

• plant growth

• type of plant

• soil type

In an experiment, which variable (independent or dependent) is the one that measured?

• dependent

• independent

In an experiment, which variable (independent or dependent) is the one that is changed to see if it has an effect on something else?

• independent

• dependent

Tags

NGSS.MS-PS2-2