Physics 1040 Unit 2-4 Review

Question 1

Which of the jovian planets has the shortest period of rotation (the shortest day)?

Accepted Answer

Jupiter

Question 2

What kind of galaxy is this?

Accepted Answer

Elliptical

Question 3

A massive blue star is converting hydrogen to helium in its core. Where is this star found on the HR diagram

Accepted Answer

the top left of the main sequence

Question 4

to accurately compare the brightness of stars, all of the stars would have to be...

Accepted Answer

the same distance away

Question 5

What objects are leftover from the formation of the solar system?

Accepted Answer

Asteroids

Question 6

What starts the death of a massive star?

Accepted Answer

the fusion of iron

Question 7

Vera Rubin saw galaxies rotating too quickly. This led to the discovery of...

Accepted Answer

Dark Matter

Question 8

Which type of star cluster consists of population 2 stars?

Accepted Answer

Globular Clusters

Question 9

What kind of galaxy is this?

Accepted Answer

Irr

Question 10

You see one star in the sky that looks particularly dim. Why?

Accepted Answer

there is no way to tell by just looking

Question 11

An H-R Diagram plots the luminosity of stars against their:

Accepted Answer

surface temperature

Question 12

The main reason the spectra of the stars do not all look alike is that the stars

Accepted Answer

stars have different elements in their atmospheres

Question 13

What is the only moon in our Solar System to have a substantial atmosphere?

Accepted Answer

Titan

Question 14

Which terrestrial world has the LEAST evidence for volcanism?

Accepted Answer

Mercury

Question 15

Which of Jupiter’s Galilean moons likely contains a layer of liquid water?

Accepted Answer

All of these

Question 16

Wien's Law relates the temperature of a star to its

Accepted Answer

peak wavelength (color)

Question 17

Who discovered that galaxies were far away objects not inside our galaxy?

Accepted Answer

Edwin Hubble

Question 18

Which spectral type will spend the shortest time on the main sequence?

Accepted Answer

O

Question 19

Which planet's moons have odd orbits, including a moon that orbits in the opposite direction of the planet's rotation?

Accepted Answer

Neptune

Question 20

Spectral classes are arranged in order of:

Accepted Answer

decreasing temperature

Question 21

What do we call a group of different galaxy clusters?

Accepted Answer

Superclusters

Questions 21