Dynamic Planet (Oceanography)

Test your knowledge of various Science Olympiad events.
SciolyMaster
Member
Member
Posts: 29
Joined: May 23rd, 2017, 4:18 pm
Division: C
State: MO
Location: Observable Universe

Re: Dynamic Planet (Oceanography)

Postby SciolyMaster » September 12th, 2019, 6:04 pm

Good Questions @JoeyC

NGL, I can't believe I didn't think about Q2 right


I'll try basic maths...

1. A basketball in water. Mass of 1 kg, Radius is 1 meter. let's say gravity is 10. What is the bouyant force, volume of water displaced by ball, Avg density of ball?

2. The salinity of 50 grams of water is 40 parts per thousand, how many ounces of pure water would need to evaporate to raise the salinity to 45 parts per thousand?

3. The magnetosphere is created by what layer of Earth? What feauture of the magnetosphere do we use to date oceanic crust?

4. What is an instrument that measures the direction and speed of ocean currents? How does it work(two words will suffice)?
1. buoyant force = 0.04 N displacement = 4 m^3 density = 0.2 kg/m^3 maybe try to have more than 1 sig fig next time?
2. 5.6 g or 0.20 oz of water.
3. ionosphere, periodic magnetic reversals (by measuring the orientation of magnetic minerals in the crust).
4. current meter, water movement orients the rotor in the direction of flow and the rotor spins in proportion to current speed.
Ladue Science Olympiad
[b]2020 Events[/b]
Sounds Geo Mapping DyPlan Astro? GV?
[b]2019 Events[/b]
UChicago / regionals / state Sounds: 5 / 2 / 3 Geo Mapping: 2 / 1 / 2 Thermo: - / 1 / :cry: Astro: - / 1 / - 8-)
"Don't believe everything you read on the internet."
–Abraham Lincoln, 1869

AlfWeg
Member
Member
Posts: 37
Joined: July 22nd, 2019, 7:52 am
Division: C
State: MI

Re: Dynamic Planet (Oceanography)

Postby AlfWeg » September 13th, 2019, 6:46 am

Good Questions @JoeyC

NGL, I can't believe I didn't think about Q2 right


I'll try basic maths...

1. A basketball in water. Mass of 1 kg, Radius is 1 meter. let's say gravity is 10. What is the bouyant force, volume of water displaced by ball, Avg density of ball?

2. The salinity of 50 grams of water is 40 parts per thousand, how many ounces of pure water would need to evaporate to raise the salinity to 45 parts per thousand?

3. The magnetosphere is created by what layer of Earth? What feauture of the magnetosphere do we use to date oceanic crust?

4. What is an instrument that measures the direction and speed of ocean currents? How does it work(two words will suffice)?
1. buoyant force = 0.04 N displacement = 4 m^3 density = 0.2 kg/m^3 maybe try to have more than 1 sig fig next time?
2. 5.6 g or 0.20 oz of water.
3. ionosphere, periodic magnetic reversals (by measuring the orientation of magnetic minerals in the crust).
4. current meter, water movement orients the rotor in the direction of flow and the rotor spins in proportion to current speed.
Cool, lol wasn't thinking about sigfigs at all. 1) bouyant Force is equal to the force of gravity which is 1kg * gravity = 10Newtons. Forrmula for volume bouyant Force = Volume*Gravity*density which gives 1/1000 m^3 or . Density is correct.
2) Correct, I believe
3) Outer Core has electric currents which generate the Magnetosphere. Other part is correct
4) I was thinking ADCP, Doppler Shift, but yeah ig that works
Your Turn!
Last&SeventhYearOlympian
2019
Event: regionals/states/nationals(Big Sad) DP: 2/2/20 Protein: 2/2/15 Thermo: 3/6/16 Chem: 3/15/22
Tentative 2020
If only my favorite events didn’t conflict.... Machines, DP, Code, GeoMap RIP Chem&Protein It's kinda Dull --> [userpage]AlfWeg[/userpage]

SciolyMaster
Member
Member
Posts: 29
Joined: May 23rd, 2017, 4:18 pm
Division: C
State: MO
Location: Observable Universe

Re: Dynamic Planet (Oceanography)

Postby SciolyMaster » September 13th, 2019, 9:08 am

1. What is a guyot? How does one form?

2. Describe the three stages of atoll formation. Who first proposed this theory?

3. If a deep-water wave with a wavelength of 12 m is moving at a speed of 50 m/s in 2500 m deep water, what is its period?

4. For the wave in question 3, what is the maximum amplitude it can have before it breaks, assuming it remains in deep water?
Ladue Science Olympiad
[b]2020 Events[/b]
Sounds Geo Mapping DyPlan Astro? GV?
[b]2019 Events[/b]
UChicago / regionals / state Sounds: 5 / 2 / 3 Geo Mapping: 2 / 1 / 2 Thermo: - / 1 / :cry: Astro: - / 1 / - 8-)
"Don't believe everything you read on the internet."
–Abraham Lincoln, 1869

Giantpants
Member
Member
Posts: 39
Joined: February 7th, 2019, 5:42 am
Division: C
State: NY

Re: Dynamic Planet (Oceanography)

Postby Giantpants » September 13th, 2019, 11:46 am

1. What is a guyot? How does one form?

2. Describe the three stages of atoll formation. Who first proposed this theory?

3. If a deep-water wave with a wavelength of 12 m is moving at a speed of 50 m/s in 2500 m deep water, what is its period?

4. For the wave in question 3, what is the maximum amplitude it can have before it breaks, assuming it remains in deep water?
1. It’s like a flattopped seamount, which formed by erosion of a seamount (formed by volcanism) to have a flat top
2. Atolls are formed by
A. Volcanism forming an island
B. Erosion of the island and formation of a fringing reef, and it lowers in elevation
C. Complete submersion and the island is now a lagoon, oh and also formation of a barrier reef
I feel like I had on my old notes that Darwin came up with it lol
3. 2.77 s, I used the formula wavelength = (g*T^2)/2pi, so if I messed up somewhere lmk lol
4. I’m not so sure abt this one, wouldn’t it just break when it touched the bottom, so like, 2500 m?
Worth a shot lol
President, Kellenberg, 2018-2020
Bro. Joseph Fox, 2014-2017

2020 Events: (probably!) Dynamic Planet, Geologic Mapping, Sounds of Music, Astronomy


Return to “Question Marathons”

Who is online

Users browsing this forum: No registered users and 4 guests