ASTR 101 Exam 3

Pataasin ang iyong marka sa homework at exams ngayon gamit ang Quizwiz!

The blue sky and the red sunsets are due to the same light/air process.

True

The sky is blue because of "air" in the sky.

True

Videos: A huge air-bag-like system has been used to safely bounce a lander onto Mars.

True

Videos: CO2 is a gas that can trap heat

True

Videos: Spinning is a very important concept in the Nebular Hypothesis

True

Videos: The centrifugal force always pulls things toward the outside of a circle

True

Videos: Water likely once flowed on Mars

True

Videos: Without any CO2 in its atmosphere, the Earth would be frozen everywhere.

True

When a ray of white light emerges from a single water drop (say of a rainbow), the red will be dispersed to the bottom and the blue light to the top.

True

For Rainbows, the sun must always be

behind you

Nitrogen and Oxygen molecules tend to wriggle a lot when they are hit by

blue light

Reflection is the

bouncing law of light

Light travels at this many miles per second

hundreds of thousands

Reading: Cryovolcanism is when volcanos spit out ______ instead of rocks.

ice

Videos: The rotational speed of a collapsing gas

increases

You see two "dots of light" in the sky. One is twinkling and one is not. The one that is twinkling is likely a

star

Reading: Saturn's rings might have formed due to ______ forces that ripped a would-be moon apart.

tidal

Reading: The great red spot on Jupiter is a vast hurricane.

true

Reading: Venus' atmosphere is almost all CO2.

true

Videos: Even in the presence of the centrifugal force, gravity still pulls masses together

true

Light at 550 nm enters water of glass and has a n=1.33. What possible value of n would be possible for red light?

1.32

Clouds are white in part due to the _____ sized water drops they are made from.

Small

Reading: We've actually seen a comet hit Jupiter.

True

Reading: With Jupiter, Romer worked on some of the first measurements of the speed of light.

True

Refraction is the

Bending law of light

At the core, sunsets are red due to dispersion

False

Clouds are white because of dispersion

False

Here at the Cal Poly track (https://www.dropbox.com/s/p8hp3k69q02wgn6/trackbow.jpg?dl=0), Bensky has proven that rainbows can only form due to water droplets way up in the atmosphere.

False

Reading: According to the fig. on p. 188 of HTRTSS, the Earth was closer to Jupiter in November.

False

Reading: All of Jupiter's surface rotates at a uniform rate.

False

Reading: Galileo was pretty certain about what he was seeing (i.e. rings and moons) when he first observed Saturn in a telescope.

False

Reading: Like the Moon, Mercury has a small iron core (relative to its size).

False

Reading: Mercury has a nice, thick atmosphere.

False

Reading: Mercury's year is longer than the Earth's year.

False

Reading: Missions to Mars have a very high success rate.

False

Reading: Saturn is the only planet in our solar system with rings

False

Reading: Saturn's moon Mimas resembles the Death Star from Star Wars

False

Reading: Saturn's moon are boring chunks of ice.

False

Reading: Saturn's tilt angle is way way different than the Earth's

False

Reading: The book mentions that Galileo saw Saturn's rings "edgewise." This would make the rings very clear to see from Earth.

False

Reading: The figure on the top of p. 91 in HTRTSS (caption="Mercury's perihelic advance....") shows Mercury's orbit always traces out the same stationary elliptical path.

False

Reading: The term 'inferior planet' is meant to mean 'insignificant.'

False

Reading: There is no evidence that water ever flowed on Mars.

False

Reading: There's no chance of finding life on Europa.

False

Reading: Venus does not show phases, like our Moon and Mercury.

False

Reading: Venus has excellent solar wind protection.

False

Reading: We are sure Venus' volcanoes are still active.

False

The sky is blue because of dispersion

False

The sky is blue because of water vapor in the sky.

False

The sky is blue due to sunlight reflecting off of the earth's vast oceans.

False

Videos: Mars has a very strong magnetic field.

False

Videos: Mars's atmosphere is thick enough that a parachute alone can be used to slow down and land on it.

False

Videos: The "Venus Equation" is "Venus=Nice."

False

Videos: Venus has a very slight greenhouse effect going on.

False

Videos: Venus is about 2x as large as the earth.

False

When an excited atom releases a photon, every outgoing photon due to deexcitation will always go in the exactly the same direction.

False

Reading: Saturn as a planet has deep, hot layers of

H and He

Videos: The original Nebula our solar system was mostly made out of

H and He

Videos: Light that is called "infrared" is most associated with

Heat

Water drops that form rainbows are relatively

Large

Reading: Venus rotates very slowly.

True

Reading: We have landed a spacecraft on Saturn's moon Titan.

True

For a primary (nice and bright) rainbow, the blue light is always on the bottom

True

Rainbows form because of dispersion of light in water drops

True

Reading: A 'transit' is when Venus moves directly between the line-of-sight between the Earth and Sun.

True

Reading: An 'inferior planet' lies between the Earth and Sun.

True

Reading: In in 1700s, a transit of Venus helped to establish the size of the solar system.

True

Reading: It appears as if Io has quite a few volcanoes.

True

Reading: Jupiter is kind of like a "vacuum cleaner" of the solar system.

True

Reading: Mars has polar ice caps.

True

Reading: Mars's day is about as long as Earth's.

True

Reading: Mars's moons are likely captured asteroids.

True

Reading: Mercury shows phases, just like our Moon.

True

Reading: Saturn would experience seasons

True

Reading: Saturn's moon Enceladus has a smooth surface indicating active geology

True

Reading: Saturn's moon Enceladus may have a salty ocean below its surface.

True

Reading: Saturn's moon Titan is larger than the planet Mercury.

True

Reading: Saturn's rings are so big that they would actually block portions of the planet we can see at a given time.

True

Reading: Saturn's rings are visible to us here on Earth

True

Reading: Saturns rings have a dark line splitting them up.

True

Reading: Sometimes a day on Mercury would have two sunrises.

True

Reading: The Fig on p. 206 of multiple orientations of Saturn would have to do with its tilt.

True

Reading: The surface of Saturn's moon Titan shows dry lake beds and river channels.

True

Reading: There are 1000mph winds on Saturn.

True

Reading: Titan has a similar "same face to your host planet" situation as our own moon.

True

Reading: Venus has a 'retrograde rotation.'

True

Reading: Venus has many, many volcanoes.

True

Reading: Venus is a very dry (i.e. devoid of liquids) planet.

True

Reading: Venus is covered with clouds, that are there all the time.

True

Reading: Venus is the 2nd brightest object in the sky after the Sun.

True

Reading: Hmmm...so it appears as if all of the excitement about life on Mars was due to a translation issue between English and Italian?

Yes

This Christmas light design (https://www.dropbox.com/s/dpgrans7wggddjk/xmas_prism.jpeg?dl=0) correctly mimics how a prism would emit a ray of ingoing light.

Yes

Videos: A "nebula" in astronomy is

dust

Reading: Mars has a very thick atmosphere.

false

Stars would twinkle, if observed from the surface of the moon.

false

Videos: In the Nebular Hypothesis, the originating heat that led to the star forming came from. (Careful with this one!)

friction

We see stars twinkle on Earth because:

of our turbulent atmosphere

This sits at the center of a simple atom

proton

Videos: You are on a stool spinning around. When you push your arms outward, you

slow down

Videos: Rocky planets formed closer to the sun do to the

solar wind


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