### Re: Fossils B/C

Posted:

**February 29th, 2020, 4:05 pm**Question: Following a massive bolide impact in the year 2888, which specimen would you expect to

find in the highest biomass?

Answer: Psaronius

Page **18** of **22**

Posted: **February 29th, 2020, 4:05 pm**

Question: Following a massive bolide impact in the year 2888, which specimen would you expect to

find in the highest biomass?

Answer: Psaronius

Posted: **February 29th, 2020, 4:11 pm**

Does anyone know the age ranges of each of the isotopes are for absolute dating?

Posted: **February 29th, 2020, 4:18 pm**

Posted: **February 29th, 2020, 4:20 pm**

I just printed out the chart found at http://earthsci.org/space/space/geotime ... adate.html under "more parent-daughter relationships" and it's worked out for me so far

Posted: **March 4th, 2020, 2:47 pm**

Thanks guys!

What are the equations for speed and dimensionless speed?

I just need to figure out the equations for speed and dimensionless speed using the variables of track length, stride length, and leg length.

(I have absolutely no clue how to do this and since last year it was tested, might as well put it in our binder now before I forget again ( and I carry my partner so if I don't know something, then he doesn't know it most of the time)

Thanks in advance, and I hope to see some of you at CalTech!

What are the equations for speed and dimensionless speed?

I just need to figure out the equations for speed and dimensionless speed using the variables of track length, stride length, and leg length.

(I have absolutely no clue how to do this and since last year it was tested, might as well put it in our binder now before I forget again ( and I carry my partner so if I don't know something, then he doesn't know it most of the time)

Thanks in advance, and I hope to see some of you at CalTech!

Posted: **March 5th, 2020, 3:08 pm**

Leg Length = Hip Height = 4 * Track Lengthtwig wrote: ↑March 4th, 2020, 2:47 pmThanks guys!

What are the equations for speed and dimensionless speed?

I just need to figure out the equations for speed and dimensionless speed using the variables of track length, stride length, and leg length.

(I have absolutely no clue how to do this and since last year it was tested, might as well put it in our binder now before I forget again ( and I carry my partner so if I don't know something, then he doesn't know it most of the time)

Thanks in advance, and I hope to see some of you at CalTech!

Relative Stride Length (RSL) = Stride Length / Leg Length

Dimensionless Speed ≈ (RSL - 0.72) / 1.19 ≈ RSL * 0.83 - 0.7 ≈ (RSL - 1) / 1.1

Speed = Dimensionless Speed * sqrt(Leg Length / g)

Posted: **March 6th, 2020, 9:48 am**

Who's excited for rocks to come in next year?

Posted: **March 6th, 2020, 12:59 pm**

ehhhhhhhhhhhhhhh I've got to say that I prefer fossils, I really like the paleobiology/life aspect. Rocks will be ok, but in my opinion fossils is better.

Posted: **March 7th, 2020, 10:41 am**

Kinda excited, but not really... bc I prefer fossils more.

I'm still sad about states being canceled due to coronavirus and I have cm soon...

I'm still sad about states being canceled due to coronavirus and I have cm soon...

Posted: **March 7th, 2020, 11:03 am**

It must be horrible to have prepared and studied so much only to have states be canceled. My sympathies go to everyone in SoCal.

We can hope that this won’t happen in other states, but it unfortunately probably won’t be the case :/ I just try to remember that having fun learning is the reason scioly exists, not going to competitions (though that is a fun part of it).

To make this post related to fossils, how much has everyone seen about mass extinctions? I don’t think I’ve had a single question in the 3 competitions I’ve been to so far.