flashcards

Question 1

Nebula

Answer 1

A nebula is a distinct body of interstellar clouds. Originally, the term was used to describe any diffused astronomical object, including galaxies beyond the Milky Way.

Question 2

Solar Nebula

Answer 2

Solar nebula, gaseous cloud from which, in the so-called nebular hypothesis of the origin of the solar system, the Sun and planets formed by condensation.

Question 3

Nuclear Fusion

Answer 3

Nuclear fusion is a reaction in which two or more atomic nuclei are combined to form one or more different atomic nuclei and subatomic particles.

Question 4

Sunspot

Answer 4

Sunspots are dark, planet-sized regions that appear on the “surface” of the Sun.

Question 5

Terrestrial Planets

Answer 5

The Terrestrial Planets. From top: Mercury, Venus, Earth and Mars.

Question 6

Prograde Rotation

Answer 6

Retrograde motion in astronomy is, in general, orbital or rotational motion of an object in the direction opposite the rotation of its primary

Question 7

Retrograde Rotation

Answer 7

Retrograde refers to an object that spins in the opposite direction of its orbit.

Question 8

Gas Giant

Answer 8

A gas giant is a large planet mostly composed of helium and/or hydrogen.

Question 9

Satellite

Answer 9

A satellite is a moon, planet or machine that orbits a planet or star

Question 10

New Moon

Answer 10

In astronomy, the new moon is the first lunar phase, when the Moon and Sun have the same ecliptic longitude

Question 11

Waxing Crescent

Answer 11

The Waxing Crescent is an intermediate phase of the Moon, which starts after the New Moon and lasts until the First Quarter. In this phase,

Question 12

1st Quarter Moon

Answer 12

The moon is 90 degrees away from the sun in the sky and is half-illuminated from our point of view. We call it “first quarter

Question 13

Waxing Gibbous

Answer 13

The Waxing Gibbous is an intermediate phase of the Moon that starts right after the First Quarter when the illumination is 50%. T

Question 14

Full Moon

Answer 14

the phase of the moon in which its whole disk is illuminated.

Question 15

Waning Gibbous

Answer 15

More than half full in phase, but growing smaller.

Question 16

Last Quarter Moon

Answer 16

A last quarter moon appears half-lit by sunshine and half-immersed in its own shadow. It rises in the middle of the night,

Question 17

Waning Crescent

Answer 17

The Waning Crescent phase occurs when the illumination of the Moon decreases from 49.9% to 0.1%.

Question 18

Solar Eclipse

Answer 18

A solar eclipse occurs when a portion of the Earth is engulfed in a shadow cast by the Moon which fully or partially blocks sunlight.

Question 19

Lunar Eclipse

Answer 19

A lunar eclipse occurs when the Moon moves into the Earth’s shadow.

Question 20

Comet

Answer 20

A comet is an icy, small Solar System body that, when passing close to the Sun, warms and begins to release gases,

Question 21

Asteroid

Answer 21

An asteroid is a minor planet of the inner Solar System.

Question 22

Asteroid Belt

Answer 22

The asteroid belt is a torus-shaped region in the Solar System,

Question 23

Meteoroid

Answer 23

a small body moving in the solar system that would become a meteor if it entered the earth’s atmosphere.

Question 24

Meteorite

Answer 24

A meteorite is a solid piece of debris from an object,

Question 25

Meteor

Answer 25

A meteoroid is a small rocky or metallic body in outer space