Orbits and Telescopes (which will it be?)
This type of telescope uses a mirror as its main light collecting component.
What is a reflecting telescope?
Light "particles" are called this
What are photons?
How much more light can a 12" telescope collect than a 6" telescope?
A = (pi)*r2 = (pi)*d2/4
What is 4 times more light?
A12/A6 = (12/6)2 = 4 times more light
(work this out on the board if needed)
Saturn's rings are made of this.
What are many solid pieces?
or
What is ice?
This method is used to study the interior of the Earth.
What is seismic waves?
This planet was discovered using mathematical models
What is Neptune?
An object moving towards the Earth will appear _____-shifted due to the ______ effect (fill in both)
What is blue (shifted) and Doppler (effect)?
The Sun has a temperature of 5800K. What is the peak wavelength of emission?
lambdamax=(2.9x106nmK)/(T)
What is 500nm?
lambdamax=(2.9x106nmK)/(5800K) = 500nm
This storm has been observed on Jupiter for more than 300 years.
What is the Great Red Spot?
This makes up a majority of the Earth's atmosphere.
What is nitrogen?
This is the location you would put a telescope to observe ultraviolet radiation.
What is in space (or outside the Earth's atmosphere)?
The highest energy visible light photons are this color.
What is violet (or purple)?
(What about wavelength and frequency?)
Mars has a volume of 1.6x1020 m3. What is the radius of Mars?
V=(4/3)(pi)(r3)
What is 3.4x106m?
(work this out on the board if needed)
This planet's rotation axis is tilted by ~98 degrees.
What is Uranus?
This planet is home to Olympus Mons.
What is Mars?
These are two ways that Earth's atmosphere hinders ground-based observations.
(Any two)
What are weather, light pollution, twinkling/turbulence, absorption of most wavelengths?
Emission (or absorption) spectra are specific to a particular element because of this
What is the energy level structure?
(Different for each atom!)
Saturn has a mass of 5.7x1026kg and a radius of 5.8x107m. What is the average density of Saturn in kg/m3?
density = mass/volume
V=(4/3)(pi)(r3)
What is 697 km/m3?
density = mass/volume = 697 kg/m3
(work this out on the board if needed)
Uranus and Neptune are blue due to this in their atmosphere.
What is methane?
Visible light from the Sun heats the surface of a planet. The surface re-radiates that energy in the infrared, some of which is trapped by atmospheric molecules, through this process.
What is the greenhouse effect?
This thought experiment considered how to put an object in orbit around the Earth
What is Newton's mountain?
If we know the peak wavelength of thermal emission, we can calculate this using Wien's law.
What is temperature?
Peak wavelength = constant / temperature
A star hosting extrasolar planets has a peak wavelength of 700nm. What is the temperature of that star?
lambdamax=(2.9x106nmK)/(T)
What is 4143K?
T=(2.9x106nmK)/(lambdamax)=(2.9x106nmK)/(700nm)=4143K
Collisions of the solar wind with Jupiter's atmosphere form this.
This is the current hypothesis for the formation of Earth's Moon.
(name and explain)
What is the Giant Impact Hypothesis?
A Mars-sized object collided with the Earth sending debris into orbit which collected together to form the Moon.