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;
18 Cards in this Set
- Front
- Back
Earth's spinning on its axis is called its |
rotation |
|
Earth makes a complete rotation on its axis every |
24 hours |
|
When the south end of the Earth's axis is tilted toward the sun it is winter in the |
Northern Hemisphere |
|
When the sun, moon, and Earth line up we have a |
Spring tide |
|
The darkest part of the moon's shadow is the |
umbra |
|
The moon's surface gets very hot in direct sunlight because |
there is no atmesphere |
|
The two days on which the sun is overhead at either 23.5 degrees north or south are called |
solstices |
|
A tide with the smallest difference between low and high tides are called a |
neap tide |
|
A lunar eclipse occurs when the moon is in the ___________ phase |
full moon |
|
Each of the two days of the year when neither hemisphere is tilted toward the sun is known a |
equinox |
|
In one year, Earth completes 365 |
rotations |
|
The day in March on which the sun is overhead at noon at the equator is called the |
vernal equinox |
|
A ___________ occurs during a full moon when Earth is directly between the moon and the sun |
Lunar Eclipse |
|
When the moon is in Earth's ________________, you see a total lunar eclipse |
Umbra |
|
The tendency of an object to resist a change in motion is |
inertia |
|
The pull of gravity on the surface of the moon is ____________ that of Earth |
1/6th |
|
The force of gravity on an object is its |
weight |
|
The distance between two objects and the ___________ of the objects determine the strength of the force of gravity |
mass |