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15
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How did Marshall and Warren use observation?
They saw bacteria in stomach samples and linked them to ulcers.
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15
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Why is Spencer considered a scientist without formal training?
He used experiments and evidence to test ideas.
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15
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What was Marshall and Warren’s hypothesis and conclusion?
Hypothesis: Bacteria cause ulcers. Conclusion: H. pylori causes ulcers and can be treated with antibiotics.
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15
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What was Spencer’s hypothesis and conclusion?
Hypothesis: Magnetrons can heat food. Conclusion: Microwave energy cooks food quickly.
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Why did doctors doubt Marshall and Warren at first?
They believed ulcers were caused by stress and acid, not bacteria.
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banana
Go to last place!
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gift
Win 20 points!
Okay!
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gift
Win 25 points!
Okay!
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baam
Lose 20 points!
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15
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What did Percy Spencer discover?
He discovered microwave heating after a chocolate bar melted near a magnetron.
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thief
Give points!
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25
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rocket
Go to first place!
Okay!
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rocket
Go to first place!
Okay!
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baam
Lose 20 points!
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What did Marshall and Warren discover?
They found that H. pylori bacteria cause most stomach ulcers.
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boom
Lose 50 points!
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magnet
Take 20 points!
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shark
Other team loses 15 points!
Okay!
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banana
Go to last place!
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15
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What was van Helmont’s hypothesis and conclusion?
Hypothesis: Plants gain mass from water. Conclusion: Plants don’t gain mass from soil; most comes from something else (later known as CO₂).
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What new technology came from Spencer’s discovery?
The microwave oven.
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eraser
Reset score!
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fairy
Take points!
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25
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gift
Win 5 points!
Okay!
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banana
Go to last place!
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15
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Why do new or unusual ideas take time to be accepted?
People trust old ideas and need strong proof to change their beliefs.
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15
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How did van Helmont use observation?
He noticed the plant grew a lot but the soil barely changed in mass.
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Why didn’t van Helmont understand how plants really gained mass?
He didn’t know about photosynthesis or carbon dioxide.
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