Methods and Science
Hypotheticals
Yeast World
Data
Movie Trivia! (HARD)
100
"What is the first step of the scientific method?"
"Ask a question / identify a problem"
100
"Write a hypothesis in if/then format: Does more sugar make yeast produce more CO₂?" BE SPECIFIC
"If more sugar is added to the yeast mixture,
then more CO₂ will be produced,
because yeast uses sugar as food during fermentation."
100
"What kingdom does yeast belong to?"
"Kingdom Fungi"
100
"What is the difference between data collection and data analysis?"
"Data collection = recording what you observe.
Data analysis = explaining what the data means and why."
100
What is Mr. C's favorite movie?
Grave of the Fireflies
200
"What is a hypothesis?"
"A testable prediction written in if/then format"
200
"A student writes: 'I think warm water will make the balloon inflate.' What is wrong? Why is this not a hypothesis?"
"Not in if/then format.
Does not identify the independent variable clearly.
Does not explain why."
200
"Fill in the blank: Sugar → __________ + __________"
"Ethanol + CO₂"
200
"A student's results do not match their hypothesis. Should they change the data?"
"No — never change your data.
If results do not match, explain why in your conclusion."
200
What is this movie called?
Tangled
300
"What is the difference between an independent variable and a dependent variable?"
"Independent variable = what you change on purpose.
Dependent variable = what you measure as a result."
300
"What must every if/then hypothesis include?"
"If (independent variable),
then (dependent variable / predicted result),
because (scientific reasoning)."
300
"What does heterotrophic mean? Give one example from the yeast lab."
"Cannot make own food — must absorb nutrients.
In the lab: yeast absorbed the sugar we added."
300
"What are the three parts of a scientific conclusion?"
"1. What happened (results)
2. What it means (analysis + vocabulary)
3. What you would change (next steps)"
300
Around how many Disney movies have had live-action adaptations?
20+
400
"A student changes the temperature of water AND the amount of sugar in the same experiment. What is wrong with this?"
"You can only change ONE variable at a time.
Two independent variables means you cannot tell
which one caused the result."
400
"A student hypothesizes that cold water will produce MORE CO₂ than warm water. Is this valid even if probably wrong?"
"Yes — a hypothesis does not have to be correct.
It just has to be testable, in if/then format,
with reasoning."
400
"In the yeast lab — why did the NO SUGAR test tube barely inflate?"
"Without sugar yeast had no food to ferment.
No fermentation = no CO₂ = no balloon inflation."
400
"A student runs the experiment once and gets one result. Is this enough?"
"No — one trial is not enough.
You need multiple trials to confirm the result
is real and not a fluke."
400
What is his name?
Camilo
500
"What is a controlled variable? Name two from the yeast fermentation lab."
"Something that stays the same across all conditions.
Examples: same amount of yeast, same test tube size,
same balloon, same timing."
500
"Write a hypothesis: What happens if you use juice instead of water in the yeast fermentation lab?"
"If juice is used instead of water in the yeast
fermentation lab, then the balloon will inflate
more because juice contains natural sugars
that yeast can also ferment."
500
"A student uses boiling water (100°C). The balloon never inflates. Why?"
"Water above 50°C kills yeast.
Dead cells cannot ferment.
No living yeast = no CO₂ = no balloon."
500
"A student writes: 'My hypothesis was wrong because the balloon did not inflate as much as I predicted.' What is missing?"
"An explanation of WHY the results were different.
What scientific reason explains the unexpected outcome?
Also missing: what they would change next time."
500
Over how many movies has Mr. C watched?
2400+