Science Test Review

Research Question: Does the type of gasoline put in a car effect how fast the car can drive. What is the independent variable?

• Type of gasoline
• which car the gas is put into
• how fast the car can drive
• how much gas is put into the car

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

Steve wanted to see if the type of fertilizer made sunflowers grow larger. What is the independent variable 

• Type of fertilizer
• Size of sunflower
• type of sun flower

Tags

CCSS.6.EE.C.9

Sam wanted to know if the color of the chair you sat in when taking a test affected your test grade. What is the dependent variable.

• Color or chair
• Grade on test
• Age of students

Sarah wanted to find out if the size of a car tire made it a smoother ride over bumps. What is the independent variable?

• Size of tire
• How smooth the ride was over bumps
• Type of car

The one factor that a scientist changes during an experiment.

• Controlled Variable

• Dependent Variable

• Independent Variable

The variable that is measured.

• Controlled Variable

• Dependent Variable

• Independent Variable

The factors that stay the same or are constant throughout the experiment.

• Controlled Variable

• Dependent Variable

• Independent Variable

In a controlled experiment, how many independent variables can be tested at a time?

• one

• none

• two or more

• how ever many makes sense.

Why is it important to have only one independent variable and to control the other variables when performing science experiments?

• So you can tell which factor is causing the change in the experiment.

• It does not matter, you can have as many independent variables as you want.

Cindy wanted to find out how the amount of sunlight affects the growth of plants. She placed two tomato plants in 10 inch pots with potting soil and watered them ¼ cup each day. One plant was placed under a cardboard box and one was placed in the sunlight. She measured the growth of the plant each week for three weeks.

What is the dependent variable?

• Using the same type of plant

• Each plant was placed in a 10 inch pot

• The growth of the plant

• One plant is in the sunlight and the other is under a box

Tags

NGSS.MS-LS1-5