| A | B |
|---|
| The "big bang" was how long ago? | 13.7 billion years |
| How long after the big bang were the first stars formed? | 400 million years |
| Smaller stars end up ... | Smaller start end up just fading away. |
| Our sun will live how long? | 8-10 billion years |
| Before our sun dies what will happen? | The outer layers will expand, vaporizing Earth. |
| Our sun will end up as a ... | white dwarf |
| Large stars create a ... | super nova |
| The largest stars end up as a ... | black hole |
| The Greeks believed the ... was the center of the universe. | Earth |
| Galileo discovered... | moons of Jupiter & our moon had mountains... |
| Name the 4 theories of how we got our moon. | 1. planet capture, 2. coaccreation, 3. fission, 4. impact |
| What is the current theory of how we got our moon? | giant impact (or Big Whack) |
| Why was planet capture theory thrown out? | bad odds (moon too big) |
| Why was fission theory thrown out? | no evidence Earth spun so fast |
| Why was coaccreation theory thrown out? | Earth and moon different consistency |
| The moon's radius is ___ of the Earth's radius. | 1/4 |
| The Earth ____ on its axis every ____ | rotates - 24 hours (1 day) |
| rotation on its axis gives the earth... | day and night (light & dark) |
| The Earth ___ around the sun every ___ | revolves - 365 days (1 year) |
| What causes seasons? | slant of our axis and revolution of Earth around sun |
| The moon ____ around the Earth every ____. | revolves - 28 days |
| The moon _____ on its axis every ... | rotates - 28 days |
| In what season are we closest to the sun? | winter |
What is the phase of the moon and when will it rise?,  | waning gibbous - rise at 9 p.m. |
What is the phase of the moon and when will it be overhead?,  | waxing crescent - overhead 3 p.m. |
What is the phase of the moon and when will it be set?,  | new moon - set 6 p.m. |
| When the moon goes into the Earth's shadow it creates a ... | lunar eclipse,  |
| When the moon goes between the Earth and the sun it creates a ... | solar eclipse,  |
| what phase of the moon would it be during a solar eclipse? | new moon |
| what phase of the moon would it be during a lunar eclipse? | full moon |
| Approx. what time of day would it be during a solar eclipse? | around noon |
| Approx. what time of day would it be during a lunar eclipse? | around midnight |
| A blue moon is when ... | there are two full moons in the same month |
| A ... is a meteoroid that hits the Earth | meteorite |
| The proper name for a shooting star | meteor |
| glows with a tail | comet |
| moves slowly, has a tail, is in orbit around the sun | comet |
| happens when Earth passes through debris left over from old comet | meteor shower |
| when you get a lot of meteors | meteor shower |
| caused extinction of dinosaurs | meteorite |
What is this (moving very very slowly through the night sky)??,  | Comet, |
What is this?,  | meteorite, |
What is this (moving rapidly through the night sky)?,  | meteor, |
What is this?,  | meteor shower, |
