Chapter 5-7 Flashcards
(20 cards)
3 kinds of telescopes?
Shmidt-Cassegrain, Newtonian, Dobsonian
What kind of telescope do we have?
14’ Cassegrain
What is special about the Hubble Telescope?
It has no atmospheric interference
What is an interferometer?
multiple telescopes working together
Explain adaptive optics?
Using a laser to account for atmospheric interference
What is a CCD?
A Charged Coupled Device, it can take the intensity of the image and relate it to a charge and color
What composes Earth’s crust?
Mostly silicates in the form of rocks
What is Earth’s core made up of?
Mostly iron and nickel
How do we know that there is liquid?
S and P waves from earthquakes
How did the atmosphere originate?
Volcanoes and impacts
Why does Earth have an atmosphere?
It has enough mass
Composition of the atmosphere?
78% Nitrogen, 21% Oxygen, 1% other
Precession?
cone shape from 23.5-degree tilt
Why do we have aurora?
The magnetic field effects particles of solar wind
Time for full cycle of moon?
29.5 days
Time for full rotation of moon?
27.3 days
Three types of features on the moon?
Craters, Maria, Highlands
Why tidal bulge?
Differential force from the moon
Spring Tide?
Moon and Sun line up
Neap tide?
Moon at 90-degrees from earth and sun
