 |
Java Games: Flashcards, matching, concentration, and word search. |
 |
|
Earth Models and Movements
Geocentric and heliocentric models, also rotation, revolution, and solar system
|
| A | B |
|---|
| geocentric | Earth centered |
| heliocentric | Sun centered |
| Galileo | telescope & heliocentric |
| Copernicus | first heliocentric book |
| Earth location | Solar System |
| Sun | greatest mass in Solar System |
| our galaxy | Milky Way |
| Milky Way ? galaxy | spiral galaxy |
| Earth age | 4.6 billion years |
| Universe age | 12-15 billion years |
| Big Bang | beginning of Universe |
| Black Hole | its gravity absorbs light |
| light years | distance between stars |
| rotation | causes day and night |
| revolution | takes one year |
| axis | imaginary line through middle of Earth |
| 24 hours | one rotation takes |
| one orbit around the Sun | revolution |
| sphere | Earth's shape |
| 23.5 | Earth's tilt |
|
| |
