Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
27 Cards in this Set
- Front
- Back
|
What is the spinning of Earth on it's axis? |
Rotation |
|
|
What is a curved path of an object around another object in space? |
Orbit |
|
|
What is the movement of Earth around the sun called? |
Revolution |
|
|
What are the mountainous areas on the moon called? |
Lunar Highlands |
|
|
What are the smooth, dark regions of the moon called? |
Maria |
|
|
What is it known as when either the moon blocks out the sun or the Earth blocking out the moon? |
Eclipse |
|
|
What are the alternate rises and falls in sea level called? |
Tides |
|
|
What is 150 million km known as? |
An Astrotonomical Unit |
|
|
What are fragments from space that survive their plunge through the atmosphere to Earth called? |
Meteorite |
|
|
What is a large body of ice and rock that travels around the sun in an elliptical orbit called? |
Comets |
|
|
What is a group of stars that forms a pattern in the sky? |
constellation |
|
|
What is an exploding star called? |
Supernova |
|
|
What is a group of stars, gas and dust held together by gravity? |
Galaxy |
|
|
What is the distance light travels in a year known as? |
light year |
|
|
What is the natural force of attraction between two massive bodies? |
Gravity |
|
|
What is the term for "Having to do with our moon?" |
Lunar |
|
|
What is the orbit or revolution of the moon around Earth known as? |
Lunar Cycle |
|
|
What is the average height of the low tides measured over a long period of time known as? |
Mean Low Water |
|
|
What is it called when a low tide goes below 0? |
Minus Tide |
|
|
What are the positions of the moon in it's cycle relative to Earth and the sun? |
Lunar phases |
|
|
What is it called when the moon is at it's farthest distance from Earth? |
Apogee |
|
|
What is it called when the moon is closest to Earth? |
Perigee |
|
|
What is the period of strong tides during the full and new moon phases? |
Spring Tides |
|
|
What is the period of weak tides during first and last quarter phases of the moon known as? |
Neap Tides |
|
|
What is a galaxy that is organized, spins and resembles a flat disk? |
Spiral galaxy |
|
|
What is a galaxy that is tightly packed? |
Elliptical galaxy |
|
|
What is an unorganized galaxy? |
Irregular galaxy |
