Scientific Method

Scientific Method

by Rena Harbeck

Multiple Select

An experiment was designed to test whether students could squeeze a clothespin more times in 1 minute after resting or after exercising. What would be a hypothesis for the experiment?

• Do students squeeze clothespins more often in 1 minute after exercising?

• Can most students squeeze a clothespin more times after they rest?

• Ten students who exercise before squeezing a clothespin squeezed it more times in 1 minute than ten students who rested first.

• Students who rest before squeezing a clothespin will squeeze it fewer times in 1 minute than students who exercise beforehand.

Multiple Choice

A student wondered if butterflies would show any differences in their wing color if, as caterpillars, they were grown in the dark or grown in bright white light. Which statement would be a possible hypothesis for an experiment to test this idea?

• Caterpillars exposed to bright white light will show more blue and green in their wings when they become butterflies than caterpillars kept in the dark.

• Will caterpillars kept in the dark have brighter wings when they become butterflies than caterpillars exposed to bright white light?

• Ten caterpillars will be kept in the dark and ten caterpillars will be exposed to bright white light and allowed to develop into butterflies.

• Results show that caterpillars kept in the dark and those exposed to bright white light had the same wing color when they became butterflies.

Everything BUT the independent and dependent variables

Multiple Choice

Testing the effect of oxyclean on stains.

• Control group gets just soap

  Experimental group gets oxyclean

• Control group gets just water

  Experimental group gets soap

• Control group gets just oxyclean

  Experimental group gets water

• Control group gets just oxyclean

  Experimental group gets oxyclean

Multiple Choice

Testing the effect of lack of sleep on test grades

• C - regular sleep

  E - regular sleep

• C - regular sleep

  E - differing amounts of sleep

• C - differing amounts of sleep

  E - regular sleep

• C - sleep with medication

  E - regular sleep

Multiple Choice

Testing the effect of excess CO₂ on plant growth (hint: plants NEED CO₂)

• C - no CO₂

  E - varying amounts of CO₂

• C - varying amounts of CO₂

  E - normal amount of CO₂

• C - normal amount of CO₂

  E - varying amounts of CO₂

• C - no CO₂

  E - normal amount of CO₂

Multiple Choice

You are testing to see if vitamin C will cause wounds to heal faster

• C - varying amounts of Vitamin C

  E - normal amount of Vitamin C

• C - normal amount of Vitamin C

  E - varying amounts of Vitamin C

• C - no vitamin C

  E - CO₂

• C - varying amounts of Vitamin C

  E - no Vitamin C

Multiple Choice

Testing to see if adding iron to plant food will help plants grow faster

• C - food with no iron

  E - food with no iron

• C - food with no iron

  E - food with iron

• C - food with iron

  E - food with no iron

How to remember - I control

Comes after If in the hypothesis

Multiple Choice

Testing the effect of oxyclean on stains.

• Amount of oxyclean

• Amount of soap

• Amount of water

• Oxyclean

Multiple Choice

Testing the effect of lack of sleep on test grades

• Type of test

• Amount of sleep

• Sleep

• Where you sleep

Multiple Choice

Testing the effect of excess CO₂ on plant growth (hint: plants NEED CO₂)

• CO₂

• Normal amount of CO₂

• nothing

• Amount of CO₂

Multiple Choice

You are testing to sere if vitamin Z will cause wounds to heal faster

• Amount of Vitamin C

• Vitamin C

• Nothing

• No Vitamin C

Multiple Choice

Testing to see if adding iron to plant food will help plants grow faster

• Iron

• Type of iron

• Amount of iron

• Amount of water

How to remember - Data (what you are measuring)

Comes after then in the hypothesis

Multiple Choice

Testing the effect of oxyclean on stains.

• Amount of oxyclean

• Amount of stain left

• Type of stain

Multiple Choice

Testing the effect of lack of sleep on test grades

• Type of test

• Amount of sleep

• Test grades

Multiple Choice

Testing the effect of excess CO₂ on plant growth (hint: plants NEED CO₂)

• Growth of plant

• Plant

• CO₂ levels

Multiple Choice

You are testing to sere if Vitamin C will cause wounds to heal faster

• How fast the surgery was

• How much Vitamin C

• How fast the wounds heal

• Type of wound

Multiple Choice

Testing to see if adding iron to plant food will help plants grow faster

• C - food with no iron

  E - food with no iron

• C - food with no iron

  E - food with iron

• C - food with iron

  E - food with no iron

Open Ended

Testing the effect of oxyclean on stains.

Open Ended

Testing the effect of lack of sleep on test grades

Open Ended

Testing the effect of excess CO₂ on plant growth (hint: plants NEED CO₂)

Open Ended

You are testing to sere if vitamin Z will cause wounds to heal faster

Open Ended

Testing to see if adding iron to plant food will help plants grow faster