## Fermi Questions C

nmurali2002
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### Re: Fermi Questions C

Heres another quizlet set that I made: https://quizlet.com/286400676/fermi-facts-flash-cards/

It's essentially a copy of the Wikipedia "orders of magnitude" pages for stuff like mass, length, energy etc. Those pages are really useful.

https://en.wikipedia.org/wiki/Category: ... _magnitude

Name
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State: NY
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### Re: Fermi Questions C

nmurali2002 wrote:Heres another quizlet set that I made: https://quizlet.com/286400676/fermi-facts-flash-cards/

It's essentially a copy of the Wikipedia "orders of magnitude" pages for stuff like mass, length, energy etc. Those pages are really useful.

https://en.wikipedia.org/wiki/Category: ... _magnitude

quick tip: don't just use the power of ten, also include the coefficent. For example the mass of a electron is 9.1*10^-31 kg not just -31, and would round to -30 if it just asked for mass of a electron
SW 16-17 Syosset 18-21. Previous main events: Microbe, Invasive, Herp, Matsci, Fermi
Hoping to do Astro, Code, and Ornith next year
2018-19 highlights

qazqwerty243
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### Re: Fermi Questions C

Does anyone know of an accurate number for the number of grains of sand in the world? According to google it's 10^19, but google also says the Sahara along has 10^24 grains... so.... Can anyone help?

jkotl0327
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Joined: December 19th, 2018, 12:14 pm

### Resources

Are there any good textbooks/resources (paid or free) for studying Fermí questions in general? Also, are there any such resources that list all of the pieces of information that it is helpful for study to prepare for this event (population of NY, size of a cell, etc.).
Thank you.

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### Re: Fermi Questions C

jkotl0327 wrote:Are there any good textbooks/resources (paid or free) for studying Fermí questions in general? Also, are there any such resources that list all of the pieces of information that it is helpful for study to prepare for this event (population of NY, size of a cell, etc.).
Thank you.

Just take as many tests as you can. I've personally found the best way to do fermi is take tests, and after finishing the test, go over anything you got wrong (or sometimes even if you got it right), and figure out (and make sure you really understand) how to get the actual answer. Google whatever you don't know and memorize that so if you ever see the infomation again, you'll get it right. Tests generally ask similar style questions, so just get to know values that keep showing up.

Almost all resources i've found online has been mostly useless (fermiquestion.com was a good starter tool, rip that). Orders of magnitude on wikipedia is ok I guess but alot of the info is mostly irrelevant and is missing most of the more useful info. Idk about any possible textbooks, but i've never used them for fermi.

Edit:
qazqwerty243 wrote:Does anyone know of an accurate number for the number of grains of sand in the world? According to google it's 10^19, but google also says the Sahara along has 10^24 grains... so.... Can anyone help?

I use 19 because pretty much every test says 19. If it asks specifically for the sahara... im not sure what to go with.
SW 16-17 Syosset 18-21. Previous main events: Microbe, Invasive, Herp, Matsci, Fermi
Hoping to do Astro, Code, and Ornith next year
2018-19 highlights

jaggie34
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### Re: Fermi Questions C

Does anyone know what the top scores looked like for fermi at MIT?
Boca Raton Community High School
Events: Thermodynamics, Circuit Lab, Fermi Questions

Florida Game On C and Fermi Questions C champion (until they come back )

Name
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### Re: Fermi Questions C

jaggie34 wrote:Does anyone know what the top scores looked like for fermi at MIT?

I will update you with my score whenever I get my test back
SW 16-17 Syosset 18-21. Previous main events: Microbe, Invasive, Herp, Matsci, Fermi
Hoping to do Astro, Code, and Ornith next year
2018-19 highlights

jaggie34
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### Re: Fermi Questions C

Name wrote:
jaggie34 wrote:Does anyone know what the top scores looked like for fermi at MIT?

I will update you with my score whenever I get my test back

We got 111/200 which got us 12th
Boca Raton Community High School
Events: Thermodynamics, Circuit Lab, Fermi Questions

Florida Game On C and Fermi Questions C champion (until they come back )

Unome
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### Re: Fermi Questions C

jaggie34 wrote:Does anyone know what the top scores looked like for fermi at MIT?

I will take a guess that the top scores were in the 60-65% range. Fermi is pretty consistent.
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Jjshan26
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### Re: Fermi Questions C

Unome wrote:
jaggie34 wrote:Does anyone know what the top scores looked like for fermi at MIT?

I will take a guess that the top scores were in the 60-65% range. Fermi is pretty consistent.

Wow, above is the true Fermi Master
I can confirm this would've gotten you a medal.
Events 2019: Astro, Fermi, Designer Genes, Protein Modeling

Events 2018: Astro, Fermi, Ecology

48is2n
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### Re: Fermi Questions C

Yeah, 128/200 was good for 4th at MIT

eagerlearner102
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### Re: Fermi Questions C

Do you guys have any advice on getting +5 on an answer instead of +3? Somehow, I get a lot of +3. The answers are either 1 less or 1 more than the actual fermi answer.
Also, how do you try to improve? My scores seem to remain the same as they are around 50%.
2019 events: Protein Modeling, Sounds of Music, Fermi Questions
Other scientific pursuits: USNCO, PDB video challenge coming up!
Competition: 2019 Northern California Bay Area Regional
Fermi Questions: 2nd
Sounds of Music: 4th
Protein Modeling: 9th

Unome
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### Re: Fermi Questions C

eagerlearner102 wrote:Do you guys have any advice on getting +5 on an answer instead of +3? Somehow, I get a lot of +3. The answers are either 1 less or 1 more than the actual fermi answer.
Also, how do you try to improve? My scores seem to remain the same as they are around 50%.

50% is fairly good, although 65-70% was my usual goal at tournaments. I would recommend increasing the accuracy of your assumptions.
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eagerlearner102
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### Re: Fermi Questions C

Thank you, but the main issue is that I seem to not improve much despite studying flashcards on Quizlet and starring ones I can't remember. Maybe it is because I am taking harder tests.
2019 events: Protein Modeling, Sounds of Music, Fermi Questions
Other scientific pursuits: USNCO, PDB video challenge coming up!
Competition: 2019 Northern California Bay Area Regional
Fermi Questions: 2nd
Sounds of Music: 4th
Protein Modeling: 9th

Unome
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### Re: Fermi Questions C

eagerlearner102 wrote:Thank you, but the main issue is that I seem to not improve much despite studying flashcards on Quizlet and starring ones I can't remember. Maybe it is because I am taking harder tests.

I doubt it's about the test difficulty, unless the tests you're taking are absurdly difficult. Don't spend your time on Quizlet unless you're having trouble remembering the actual values you need - spend more time taking tests and figuring out your mistakes in reasoning through questions.
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