Semester 1 Test Review

You are doing an experiment recording the growth of plants under different amounts of sunlight. What is the dependent variable?

• The sunlight
• The growth
• The experiment
• The amounts of photons

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

The variable that causes a change is the

• constant
• independent variable
• dependent variable
• control

Tags

NGSS.MS-PS3-4

NGSS.MS-PS2-2

The variable that is the result of the experiment is the 

• constant
• independent variable
• dependent variable
• control

Tags

NGSS.MS-PS3-4

A variable that never changes is known as a 

• constant
• independent variable
• dependent variable
• control

What is the independent variable for the hypothesis: If ice melts in salt & fresh water, then it will melt faster in salt water.

• The amount of water
• The melt time
• The size of the ice cube
• The amount of salt

A student wants to test the effects of type of exercise on heart rate.  What is the dependent variable?

• heart rate
• type of exercise
• amount of exercise
• time of day exercise occurs

How many manipulated variables does an experiment have?

• 0
• 1
• between 1 and 5
• as many as needed

When experimenting with the growth of a plant, a scientist uses three (of the same type of) plants, two different fertilizers, equal light, and equal water. What type of variable is the fertilizer?

• Dependent
• Independent
• Control
• Compound

What is the base unit of mass in the metric system?

• oz
• gram
• lbs
• cm

A graduated cylinder is:

• a tool that measures volume
• a tool for mass
• a tool for length
• measures in cm