Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Astronomy
Astronomy Study Stack for Test
| Question | Answer |
|---|---|
| About how old is the Universe? | 12-14 billion years |
| What is the correct order of the planets from the Sun outward? | Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, (Pluto) |
| How are the colors of visible light placed on the spectrum? | by the wavelength of the light |
| What galaxy do we live in and what shape is it? | Milky Way; spiral |
| What is a constellation? | a grouping of stars |
| Among the Milky Way, the Sun, and Jupiter - which is the largest? | Milky Way |
| Describe the difference between rotation and revolution. | rotation is spinning on an axis; revolution is one body moving around another |
| Who studies the origin and dynamics of the universe? | cosmologist |
| What creates the ocean tides? | the gravity of the Sun and Moon |
| What are the stages of a low mass star? | nebula, protostar, main sequence, giant, white dwarf, black dwarf |
| What is the average distance from the Earth to the Sun? | 93 million miles; 1 AU |
| About how old is the Earth? | 4.5 billion years |
| What is the Sun currently burning and what will it burn in the future? | hydrogen; helium |
| Where is the asteroid belt? | between Mars an Jupiter |
| What is a synonym for luminosity? | brightness |
| Where do stars begin forming? | in a nebula |
| What are the gas giants? | Jupiter, Saturn, Uranus, Neptune |
| What is the nearest star to Earth? | Sun |
| Which planets are covered in liquid and gas? | the gas giants |
| What is a light-year used to measure? | star to star |
| What does the H-R diagram show? | luminosity, stages of stars, surface temperature |
| Why do we always see the same side of the moon? | it rotates at the same rate it revolves |
| What is the heliocentric model? | it states that the Sun is the center of the solar system |
| Who stated the laws of planetary motion? | Kepler |
| What is Earth's current tilt? | 23.5 degrees |
| What determines the eccentricity of a planet's orbit? | the distance between the foci (or focal points for Connor) |
| What order are the energies on the spectrum and what determines where they are placed? | radio waves, microwaves, infrared, visible light, ultraviolet, x-ray, gamma; wavelength |
| Why is Pluto so different from other planets? | it has an inclination; it is highly eccentric; it is smaller than the inner planets |
| What is a comet? | a moving body of dust and ice |
| What stage(s) see the start of burning helium? | giant/surpergiant |
| What is precession? | the wobble of the Earth |
| What relationship exists between a planet's eccentricity and its distance from the Sun? | None |
| What is Kepler's First Law? | All planets orbit in an ellipse with the Sun as one of the foci. |
| What is Kepler's Second Law? | All planets cover equal area in equal time. (Must change speed to do this. The higher the eccentricity, the greater the change in speed.) |
| What is Kepler's Third Law? | The time it takes a planet to complete an orbit is directly related to its distance from the Sun. |
| How will a change in obliquity impact the seasons? | If the tilt is greater, there will be a more extreme change in seasons. |
| What is an AU, light-year, and parsec used to measure? | AU=planet to planet; light-year=star to star; parsec=galaxy to galaxy |
| What part of the spectrum can humans see? | visible light = ROY G BIV |
| What type of energy is radio waves? - gamma? | radio waves are very low energy (harmless); gamma is very high energy (harmful) |
| What will be the end of the road for our star? | black dwarf |
Created by:
shelly_spangler
Popular Science sets