Reading...
Play button
Play button
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;
26 Cards in this Set
- Front
- Back
|
An eclipse occurs when the shadow of one object moves in front of another and blocks its light.
|
true
|
|
|
A solar eclipse takes place when the sunlight is cut off as the moon comes between the sun and the Earth.
|
true
|
|
|
A lunar eclipse occurs when the moon becomes dark as the Earth comes between the moon and the sun.
|
true
|
|
|
Heavenly bodies other than the Earth and moon also can eclipse each other
|
true
|
|
|
Jupiter sometimes blocks sunlight from its moons
|
true
|
|
|
Jupiter's moons sometimes cast shadows on the planet.
|
true
|
|
|
The moon is 3,475 kilometers in diameter
|
false its 3,476
|
|
|
Eclipses occur when the Earth, sun, and moon are in a straight line
|
true
|
|
|
During a lunar eclipse, the moon is not often totally darkened.
|
true
|
|
|
Halo of light around the sun only seen during an eclipse or with a chronograph
|
corona
|
|
|
Passing from sight because light is cut off
|
eclipse
|
|
|
total or partial cutting off of the light of the full moon by the Earth's shadow
|
lunar eclipse
|
|
|
Eclipse that occurs when the moon passes between the Earth and the sun
|
solar eclipse
|
|
|
For an eclipse to occur, the sun, the moon, and the Earth must be in a ________ ______ with one another.
|
straight line
|
|
|
Why can the moon eclipse the sun on occasion?
|
sometimes they line up in a straight line
the moon appears about the same size as the sun the moon and sun both have an angular diameter of ½ degree |
|
|
When the moon is directly between the Earth and sun, it is called a solar eclipse
|
true
|
|
|
A solar or lunar eclipse does not occur each month because _____.
|
the sun, moon, and the Earth are not exactly aligned each month.
|
|
|
Lunar and solar eclipses are irregular and therefore cannot be predicted with any accuracy.
|
false
|
|
|
A shadow of complete darkness is called the what?
|
umbra
|
|
|
When the moon's umbra falls on the Earth, a
_______ solar eclipse occurs. |
true
|
|
|
Who can see a total solar eclipse when the moon's umbra crosses the Earth?
|
Only those covered by the umbra
|
|
|
When can the sun's corona best be seen?
|
total solar eclipse
|
|
|
Each time the moon revolves behind the Earth, it will pass through the Earth's shadow.
|
false
|
|
|
A total lunar eclipse occurs when the moon passes through the Earth's:
|
umbra
|
|
|
A total lunar eclipse cannot be seen by everyone on the night side of the Earth.
|
false
|
|
|
A lunar eclipse must occur during a __________ phase of the moon.
|
full moon
|
