Scientific Method

A cow is given a growth hormone and then compared to another cow that was not given a growth hormone. Both cows were weighed at 2 years. What is the DEPENDENT variable?

• amount of time

• weight

• growth hormone

• type of cow

Tags

NGSS.MS-LS1-5

Mosquito repellent is sprayed on one arm and the other arm is not sprayed. The number of mosquito bites is counted after 2 hours.

What is the INDEPENDENT VARIABLE?

• which arm

• mosquito repellent

• time

• number of mosquito bites

Brad sets up an experiment to see how the mass of a ball affects the distance it rolls off a ramp.  Identify the independent variable.

• distance traveled by the ball

• mass of the ball

• height of the ramp

• weight of the ball

Tags

NGSS.MS-PS2-2

On a graph, which axis shows the independent variable?

• x-axis
• y-axis
• neither
• it changes

On a graph, which axis shows the dependent variable?

• x-axis
• y-axis
• neither
• it changes

Tags

NGSS.MS-PS3-1

At what temperature did bread mold the slowest?

• 20

• 40

• 60

• 80

Tags

NGSS.MS-LS1-5

The following statement is a hypothesis formed about marsh grass: 
If the amount of nitrogen marsh grass receives is increased, then the height of the grass will increase, because nitrogen is an essential nutrient needed for marsh grass to grow.
What is the independent variable of the statement above? 

• Height of grass
• Amount of nitrogen
• Essential nutrient
• Amount of growth

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

In this graph, what is the independent variable? 

• Population
• Day
• Species 5

A student is planning an experiment to find out how the height from which he drops a ball affects how high the ball bounces. The dependent variable is the _____.

• Diameter of the ball
• Force acting on the ball
• Height that the ball bounces
• Height from which the ball is dropped

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

When collecting data, where do we put it first?

• data table
• graph
• anywhere on the paper
• we just memorize it