PBS

The positive control is...

• the group expected to have a positive result, allowing the researcher to show that the experimental set up was capable of producing results

• a simplified version of something complex used, for example, to analyze and solve problems or make predictions

• a document showing all the sources used to research information

• control group where conditions produce a negative outcome, help identify outside influences which may be present that were not accounted for when the procedure was created

Label the part of the microscope. What is part E?

• stage

• stage clips

• focus knob

• eyepiece tube

What part is 3?

• eye piece

• base

• arm 

• coarse adjust

What is part 11?

• coarse adjustment
  

• fine adjustment

• diaphragm
  

• stage

What is part 6?

• arm 

• base

• body tube

• illuminator

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. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, the independent variable is ...

• The type of plant

• The amount of sunlight

• The type of music

• The type of liquid

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Mr. S set 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

Tags

NGSS.MS-PS2-2

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

• heart rate

• type of exercise

• amount of exercise

• time of day exercise occurs

Tags

NGSS.MS-LS2-1

What would the INDEPENDENT variable be in an experiment testing which types of paper airplane goes furthest?

• the paper used

• the type of paper airplane

• the distance of each plane's flight

• how hard the plane is thrown

Tags

NGSS.MS-PS2-2

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

• dependent variable

• independent variable

• data

• control group