DO NOW:
<<-- You have this much time to finish!
Are Cheetos bad for you?How do you know?
Scientific MethodStep 1: Purpose
What do you want to find out??
Are Cheetos bad for you?
Scientific MethodStep 2: Research
Find more information!!enriched corn meal
vegetable oil
salt
sugarMSG
yeast extract
lactic acid
citric acidartificial color
hydrolyzed soy protein
whey “cheddar cheese”onion powder
corn syrup
disodium guanylate: made from dried fish or dried seaweed.carrageenan: made from seaweed.
sodium diacetate
Scientific MethodStep 3: Hypothesis
What do you think will happen??
If... then...
Scientific MethodStep 4: Procedures
How will you test your hypothesis?
Test ONE variable at a time.
Scientific MethodStep 5: Results
What did you find out??
Scientific MethodStep 6: Conclusion
Was your hypothesis correct??
Burj Khalifa Challenge/Lab
Tallest building in the world!
830 meters or 2,723 feet
You are an architect hired to build to fix and improve
this building.
PART 1You have
minutes remaining
STOP!
Measure your tower and answer the post construction questions.
PART 2You have
minutes remaining
Group QuestionsBrainstorm answers to these questions with your group.
Write answers on one sheet of paper.
1. (easy) How tall was your second tower?
2. Was your second tower taller or shorter than the first?Taller? Why was your change successful?
Shorter? Explain why you think your hypothesis was wrong.
3. Some groups will have shorter second towers.Was their experiment worthless?
1. (easy) How tall was your second tower?
2. Was your second tower taller or shorter than the first?Taller? Why was your change successful?
Shorter? Explain why you think your hypothesis was wrong.
3. Some groups will have shorter second towers.Was their experiment worthless?
4. From your experience, does the scientific method make experimentation easier or harder than random guessing?
5. If you had to build a third tower, what would you change? Explain.
NICE!
Don’t forget!
Quickcheck on Thursday:LT1B-LT1D
Atomic mass and numberValence electrons (Bohr, Lewis Models)
Parts of the periodic table