Earth's Structure
Earth's Place in the Universe
Earth's History
Math
3 Pictures
100
It's a solid ball of Nickel, and it's why the magnetic field is so strong.
What is the Inner Core?
100
The cosmic speed limit for the universe is this, in meters per second. Represented by the letter c.
What is 300,000,000 m/s?
100
Once we had multicellular life, it really took off. This is what we call the rapid expansion of life following the proterozoic.
What is the Cambrian Explosion?
100
The wavelength, if frequency equals 3.0x1014Hz.
What is 1,000 nm?
100
This nebula was a great example of this, something light does when the source is far away.
What is redshift?
200
The peak of Mt. Everest lies many miles above one of these, which are responsible for all mountain ranges.
What is a Convergent Continental-Continental Subduction Zone?
200
This greek symbol is used to represent the length of one single wave oscillation.
What is (lowercase) lambda (λ)?
200
It doesn't make a lot of sense, but the god of the underworld is the namesake for this era, the first of earth's history.
What is The Hadean?
200
The parallax angle, if an object is 48 pc away.
What is 0.0208 arcseconds?
200
Silly putty is a good analogy for this layer of the earth.
What is the mantle?
300
Underwater, they're mid-ocean ridges. On land, they are these.
What are rift valleys?
300
The opposite side length of any parallax angle is always this fixed distance.
What is 1 Astronomical Unit (AU)?
300
Earth was lifeless until about 3.6 billion years ago, at which point we were in this era.
What is The Archaean?
300
The redshift of a hydrogen band of 450 nm observed to be 501 nm.
What is 0.113?
300
At Knight School, your parents also learned about the triple point, which lets you see both ice and water vapor float on liquid water due to this physical property.
What is density?
400
The earth hasn't finished cooling off yet, partly due to this process releasing heat from raw Uranium.
What is nuclear fission?
400
Our sun will become a white dwarf. 20 of our suns put together will become a black hole. After a supernova, a star with 15 solar masses becomes one of these.
What is a Neutron Star?
400
Today, we are trying to keep our ice caps. However ice caps were a problem for residents of this era, who faced the first mass extinction because of them.
What is the Ordovician?
400
The distance in Megaparsecs, if the velocity of a galaxy relative to earth is 5.5x106 m/s.
78.6 Mpc
400
This greek name for the "7 sisters" helped us learn about astronomical distance.
What is The Pleiades?
500
Once the president decides there's been a natural disaster, this organization steps in to deliver aid.
What is the Federal Emergency Management Agency (FEMA)? (+100 for no acronym)
500
Newton figured out that the gravitational pull of an object decreases as it's mass decreases; and as this increases.
What is the square of the distance (r squared)?
500
Eukaryotes like us were about a billion and a half years behind Archean-eon prokaryotes, with their origin being in this geological period.
What is the NEOproterozoic?
500
The force of gravity, in newtons, between 2 objects 4.5x105 meters away from each other if object 1's mass is 1.3x1029kg and object 2's mass is 4.2x1024kg? (+100 if answer includes the derived unit for newtons)
1.8x1032N (Kgm/s2)
500
The name of this year's winner of "Fat Bear Week"
Who is Chunk (32)?