Memorizing SI Units

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Amanda Bueno-Kling
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Memorizing SI Units

Postby Amanda Bueno-Kling » Sun Nov 01, 2020 11:11 pm

Are we expected to memorize SI units? I have some of them memorized, but could not remember what power of 10 a picometer was on the exam. I didn't see SI units given on the exam or on the formulas sheet, so I am guessing we should memorize them?
Does anyone have any tricks they use to memorize them, such as making an acronym or rhyme? I'm wondering what is the best way to memorize them quickly and easily. Thanks!

Katie Phan 1K
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Joined: Wed Sep 30, 2020 9:55 pm

Re: Memorizing SI Units

Postby Katie Phan 1K » Sun Nov 01, 2020 11:14 pm

I don't think we are expected to memorize SI units. The picometer conversion was actually on the formula sheet for the midterm! It was a little hard to find for me too.

nayha a 1E
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Re: Memorizing SI Units

Postby nayha a 1E » Sun Nov 01, 2020 11:16 pm

Hi! I can confirm that the conversion was on the equations sheet we had for the midterm. I believe it was in the middle, on the right side based off of memory.

Emma Healy 2J
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Joined: Wed Sep 30, 2020 9:45 pm

Re: Memorizing SI Units

Postby Emma Healy 2J » Sun Nov 01, 2020 11:16 pm

Hi Amanda! I am not sure which ones we should have memorized, and I have this same question too. I did find picometers on the formula sheet, which is given as 1 pm = 10^-12 m. I think an acronym could be really helpful if someone has one!

Teti Omilana 1G
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Re: Memorizing SI Units

Postby Teti Omilana 1G » Sun Nov 01, 2020 11:22 pm

I don't know if this will help you, but in HS they taught us the mnemonic "King Henry Died By Drinking Chocolate Milk Monday Night" (kilo, hecto, deka, base, deci, centi, milli, micro, nano) to memorize the order of the SI units.

Kushaal Madadi 2F
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Re: Memorizing SI Units

Postby Kushaal Madadi 2F » Sun Nov 01, 2020 11:23 pm

Hey! The conversions between different lengths is not too difficult if you pay attention to certain patterns. For example, a lot of the prefixes denote values which happen at intervals of 3: millimeter 10^6; nanometer 10^9; picometer 10^12. Exceptions are meter, decimeter, and centimeter.

Hasan Mirza 3F
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Re: Memorizing SI Units

Postby Hasan Mirza 3F » Sun Nov 01, 2020 11:26 pm

I think you definitely want to have a good idea of the SI units but the weirder conversions are usually on the formula sheet unless we are told otherwise.

Cassidy Cheng 1J
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Joined: Wed Sep 30, 2020 9:33 pm

Re: Memorizing SI Units

Postby Cassidy Cheng 1J » Mon Nov 02, 2020 12:51 pm

You definitely don't have to memorize them, since a lot of them are on the formula sheet Dr. Lavelle provides. But even so, I find it extremely helpful if you do have a general idea of the basic SI units, since that makes solving problems much more efficient.

Samantha Pedersen 2K
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Re: Memorizing SI Units

Postby Samantha Pedersen 2K » Mon Nov 02, 2020 1:10 pm

What I did to memorize the prefixes for SI Units was make a Quizlet set including the prefixes and the values they represent. Then, I tested myself on the Quizlet using the Learn and Write options until I felt confident.

Mahnoor_Wani_1I
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Re: Memorizing SI Units

Postby Mahnoor_Wani_1I » Mon Nov 02, 2020 1:18 pm

I also had trouble memorizing the SI units. I think what helped me was this mnemonic:
Tera – The
Giga – Great
Mega – Man
kilo – king
hecto – henry’s
deca – daughter
BASE – Beth
deci – drinks
centi – cold
mili – milk
micro – μntil
nano – nine
pico – pm

and since the SI unit increases/decreases by 10^3 power after 10^2 :

Tera – The = 10^12
Giga – Great = 10^9
Mega – Man = 10^6
kilo – king = 10^3
hecto – henry’s 10^2
deca – daughter 10^1
BASE – Beth = 10^0
deci – drinks = 10^ -1
centi – cold = ^ 10^-2
mili – milk = 10^ -3
micro – μntil 10^-5
nano – nine 10^-9
pico – pm 10^-12

My suggestion is to use either a pre-existing mnemonic or make your own to memorize !!

Kathy_Li_1H
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Joined: Wed Sep 30, 2020 9:31 pm

Re: Memorizing SI Units

Postby Kathy_Li_1H » Sat Nov 07, 2020 6:07 pm

Hi! I think you can memorize them just to make it easier for yourself but some of the conversions are actually on the reference sheet! If you don't end up memorizing them yourself, I find that oftentimes I gradually start memorizing the numbers and conversions.

Olivia Monroy 1A
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Re: Memorizing SI Units

Postby Olivia Monroy 1A » Sat Nov 07, 2020 6:10 pm

I'd say eventually memorizing would be smart just so you can quickly apply them to problems, but as people said some are given on the formula sheet. Eventually after using them so many times it should just stick!

ShinwooKim_3E
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Re: Memorizing SI Units

Postby ShinwooKim_3E » Fri Nov 13, 2020 11:58 pm

Amanda Bueno-Kling 2L wrote:Are we expected to memorize SI units? I have some of them memorized, but could not remember what power of 10 a picometer was on the exam. I didn't see SI units given on the exam or on the formulas sheet, so I am guessing we should memorize them?
Does anyone have any tricks they use to memorize them, such as making an acronym or rhyme? I'm wondering what is the best way to memorize them quickly and easily. Thanks!

I think it's highly recommended! It's easier to tackle each question once you memorize, and there are a lot of mneumonics out there to help you memorize!

Bai Rong Lin 2K
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Re: Memorizing SI Units

Postby Bai Rong Lin 2K » Sun Nov 15, 2020 11:23 pm

Amanda Bueno-Kling 2L wrote:Are we expected to memorize SI units? I have some of them memorized, but could not remember what power of 10 a picometer was on the exam. I didn't see SI units given on the exam or on the formulas sheet, so I am guessing we should memorize them?
Does anyone have any tricks they use to memorize them, such as making an acronym or rhyme? I'm wondering what is the best way to memorize them quickly and easily. Thanks!


I think having it memorized would be very beneficial when coming to a problem that requires it! but I think they would use the ones on the formula sheet most of the time.

TiffanyBrownfield 2I
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Joined: Wed Sep 30, 2020 9:42 pm

Re: Memorizing SI Units

Postby TiffanyBrownfield 2I » Sun Nov 15, 2020 11:29 pm

I'd say that it's probably good to have the most common units memorized. For example kilo (10^3), milli (10^-3), micro (10^-6), nano (10^-9), and pico (10^-12) are the ones most often used.


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