Semester 1 Exam

This variable in an experiment is the one being deliberately changed by the scientist. 

• dependent variable
• independent variable
• data
• control group

Tags

CCSS.6.EE.A.2C

A series of steps used by scientists to solve a problem or answer a question. 

• scientific method
• recipe
• data collection
• metric system

Tags

NGSS.MS-LS1-1

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

• one
• none
• two or more
• how ever many makes sense.

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

• height of the ramp
•  distance traveled by the ball
• mass of the ball
• weight of the ball

Mr. S. 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
• height of the ramp
• mass of the ball
• weight of the ball

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

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

Tags

CCSS.HSF-LE.A.1C

An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid: water, apple juice, or milk. What variables should be kept constant/controlled? 

• type of plant, flower pot,  soil, and amount of sunlight
• water, apple juice, milk
• only the amount of sunlight
• type of plant only

What is a constant/control in an experiment?

• Things that do not change inana experiment.  It's the variable that stays the same.  You can have many variables stay the same.
• It's the variables that the scientist changes in the experiment
• It's the variables that are being measured in an experiment

Which one is NOT an example of a decomposer?

• mushroom
• leaves
• mold
• worm

Tags

NGSS.HS-LS2-3

NGSS.HS-LS2-4

Examples of a producer

• frog
• algae
• worm
• mouse