Mealworm Experiment

Stage 1- Exploration and Discovery:

Observations:

- Brownish-yellow
– 6 legs in the front
– Many sections
– 2 antenna
– Tail is pointed
– Head is round
– Shiny and smooth texture
– Makes no sound
– 2 short things on the… abdomen

Questions:

- How do  they respond to sound?
– How do mealworms prefer black or white surfaces?
– Do they respond to different smells?
– How do they react to vibration

Stage 2- Testing Ideas and Stage 3- Preliminary Experiment:

Answers to the 4 questions:

Aim of the experiment: To find out if they respond to sound
Hypothesis: Yes they do respond to sound
Materials: Catanet
Procedures:
1) Make the clicking sound with the catanets and record observations
2) Make the bells ringing sound and record observations
Variables:
Independent → The type of sound
Dependent → The mealworm reaction
Observation: It crawls away from the sound of bells but crawl towards the sound of the clacking
Data interpretation: They respond to sound
Assumptions made: Every mealworm reacts the same way to stimuli
Data reliability: Repeated experiments multiple times

Aim of the experiment: To find out if they prefer black or white surfaces
Hypothesis: They prefer black surfaces
Materials: Black and white sheet of paper
Procedures:
1) Place the mealworm on the middle of paper such that it can see both the black and white surfaces of the paper.
2) Record the mealworm’s reactions
Variables:
Independent →
Dependent → The mealworm reaction
Observation: When put between the two colors, both crawl quickly towards the black side of the paper on more than one occasion
Data interpretation: They prefer black surfaces
Assumptions made: Every mealworm reacts the same way to stimuli
Data reliability: Repeated experiments multiple times

Hypothesis: They react to smell.
Materials: a clear plastic tube and a clear plastic tube with a vinegar infused cotton ball
Procedures:
1) Place a mealworm at the end of each of the tubes.
2) Record the mealworm’s reactions
Variables:
Independent → the presence of the vinegar infused cotton ball
Dependent → The mealworm reaction
Observation: The mealworm placed in the clear plastic tube with a vinegar infused cotton ball, crawled away and stayed at the end which was furthest away from the vinegar infused cotton ball.
Data interpretation: They do not like the smell.
Assumptions made: Every mealworm reacts the same way to stimuli
Data reliability: Repeated experiments multiple times

Aim of the experiment: To find out if they respond to vibration
Hypothesis: Yes they do respond to vibration
Materials: tuning fork and rubber bung
Procedures:
1) Hit the tuning fork against the rubber bung
2) Place the tuning fork near the mealworms
30 Record observations
Variables:
Independent → The amount of vibration of the tuning fork
Dependent → The mealworm reaction
Observation: It crawls away from air vibrations.
Data interpretation: They respond to vibrations.
Assumptions made: It was because of the vibration they crawled away
Data reliability: Repeated experiments multiple times


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