solar system

Question 1

Nebula

Answer 1

a large cloud of gas and dust in interstellar space

Question 2

solar nebula

Answer 2

a cloud of as an dust formed in our solar system

Question 3

nuclear fusion

Answer 3

a combination of the nuclei of small atoms to form a large nucleus.

Question 4

sun spot

Answer 4

a dark area pf the photo-sphere of the sun that is cooler than the surroundings areas and that has a strong magnetic field

Question 5

terrestrial planets

Answer 5

one of the highly dense planets nearest to the sun

Question 6

pro-grade rotation

Answer 6

the counter clockwise spin of a planet or moon as seen from above the planets north pole

Question 7

retrograde rotation

Answer 7

the clockwise spin of a planet or moon as seen from above the planets north pole.

Question 8

gas giant

Answer 8

a planet that has a deep, massive atmosphere, such as Jupiter, Saturn, Uranus, or Neptune.

Question 9

satellite

Answer 9

a natural or artificial body that revolves around the planet

Question 10

new moon

Answer 10

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

Question 11

waxing crescent

Answer 11

There is a shadow on a crescent moon, but it’s the moon’s own shadow. … When you stand looking at a waxing crescent moon, you’re seeing a thin fraction of the moon’s day side, or illuminated side, and a larger fraction of the moon’s night side, the side of the moon submerged in the moon’s own shadow.

Question 12

1st quarter moon

Answer 12

A quarter is a three-month period on a company’s financial calendar that acts as a basis for periodic financial reports and the paying of dividends. A quarter refers to one-fourth of a year and is typically expressed as Q1 for the first quarter, Q2 for the second quarter, and so forth.

Question 13

waxing gibbous

Answer 13

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

Question 14

full moon

Answer 14

is the lunar phase when the Moon appears fully illuminated from Earth’s perspective. This occurs when Earth is located between the Sun and the Moon.

Question 15

waning gibbous

Answer 15

an intermediary Moon phase. It starts right after the Full Moon, and it lasts until the Third Quarter.

Question 16

last quarter moon

Answer 16

appears half-lit by sunshine and half-immersed in its own shadow.

Question 17

waning crescent

Answer 17

. During this phase, the illuminated part of the moon gets smaller and smaller, until the cycle meets its end, starting again with the new moon.

Question 18

solar eclipse

Answer 18

occurs when a portion of the Earth is engulfed in a shadow cast by the Moon which fully or partially blocks sunlight. This occurs when the Sun, Moon and Earth are aligned.

Question 19

lunar eclipse

Answer 19

occurs when the Moon moves into the Earth’s shadow. This can occur only when the Sun, Earth, and Moon are exactly or very closely aligned with Earth between the other two, and only on the night of a full moon.

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, a process that is called outgassing.

Question 21

asteroid

Answer 21

is a minor planet of the inner Solar System

Question 22

asteroid belt

Answer 22

is a torus-shaped region in the Solar System, located roughly between the orbits of the planets Jupiter and Mars.

Question 23

meteoroid

Answer 23

is a small rocky or metallic body in outer space.

Question 24

meteorite

Answer 24

is a rock that falls to Earth from space.

Question 25

meteor

Answer 25

a small body of matter from outer space that enters the earth’s atmosphere, becoming incandescent as a result of friction and appearing as a streak of light.