Space exploration Flashcards
(10 cards)
1
Q
What is Plasma
A
free moving electrons and ions (4th state of matter, only exist in space.)
2
Q
What is a constellation
A
are a group of stars that form a shape or pattern
3
Q
Meaning of celestial sphere
A
Space (everything above the horizon)
4
Q
What is a satellite
A
Something that orbits around a planet or a star
5
Q
What is parallax
A
Effect of seeing a closer object move faster than a further object
6
Q
1 AU= to what?
A
150 000 000 km
7
Q
What do we use parallax for
A
Measuring distances to faraway stars
8
Q
A year lasts ___
A
365.25
9
Q
Difference between solar eclipse and lunar eclipse
A
SME (solar) SEM (Lunar)
10
Q
What does umbra and penumbra mean
A
umbra- The whole part of a shadow case
penumbra- part of the shadow where u can still see some light
