Our Solar System

Question 1

SOLAR SYSTEM

Answer 1

is very big

Question 2

T or F
Our Solar System consists of 9 planets

Answer 2

F. 8 planets and one dwarf planet (Pluto)

Question 3

Largest object in our Solar System, about 99.8%

Answer 3

The Sun

Question 4

Temperature of Sun’s photosphere

Answer 4

About 5800 Kelvin

Question 5

“Cool” regions of the photosphere, only about 3800 Kelvin

Answer 5

Sunspots

Question 6

What causes sunspots?

Answer 6

A very complicated interaction with Sun’s magnetic field

Question 7

How is the Sun considered in terms of size??

Answer 7

Yellow Dwarf star

Question 8

Region just above the photosphere

Answer 8

Chromosphere

Question 9

Highly rarefied region just above the chromosphere, and is only during a total solar eclipse

Answer 9

Corona

Question 10

Point where the planet is furthest away from the Sun

Answer 10

Aphelion

Question 11

Point where the planet is closest to the Sun

Answer 11

Perihelion

Question 12

When an astronomical object is temporarily obscured, by passing into the shadow of another body

Answer 12

Eclipse

Question 13

Alignment of three celestial objects

Answer 13

Syzygy

Question 14

Eclipse
- Completely hidden

Answer 14

Occultation

Question 15

Eclipse
- Partially hidden

Answer 15

Transit

Question 16

An eclipse when shadow falls on Earth

Answer 16

Solar Eclipse

Question 17

An eclipse when Earth blocks most of light

Answer 17

Lunar Eclipse

Question 18

Region of an object’s shadow when the object completely covers the light source

Answer 18

Umbra

Question 19

Region of an object’s shadow when the object is completely in front of the light source but too small to completely cover it

Answer 19

Antumbra

Question 20

Region of an object’s shadow when the object is only partially in front of the light source

Answer 20

Penumbra

Question 21

Rocky airless worlds, too small to be called planets

Answer 21

Asteroids

Question 22

When asteroids gather in a large number in a doughnut-shaped ring, it is called

Answer 22

Asteroid Belt

Question 23

Luminous sphere of plasma held together by its own gravity

Answer 23

Stars

Question 24

Occurs during the last stellar evolutionary stages of a massive star’s life, marked by one final titanic explosion

Answer 24

Super Nova

Question 25

Brightest star you see in the sky

Answer 25

Sirius, "Dog Star"

Question 26

The largest star

Answer 26

VY Canis Majoris

Question 27

- Blue supergiant - Brightest star in the constellation Orion

Answer 27

Rigel

Question 28

Bright red star in the Orion which is nearing its end

Answer 28

Betelgeuse

Question 29

Celestial body moving in an elliptical orbit around a star

Answer 29

Planets

Question 30

Relatively small, dense, rocky planets closest to the Sun

Answer 30

Terrestrial planets

Question 31

Large, low density planets farthest from the Sun

Answer 31

Jovian planets

Question 32

They form a diffuse spherical cloud located in the far reaches of the Solar System

Answer 32

Comets

Question 33

Dutch astronomer, showed in 1950 that comets form a diffuse spherical cloud located in the far reaches of the Solar System. Some comets periodically swoop toward the Sun and retreat again

Answer 33

Jan Oort

Question 34

Pluto, Haumea, Makemake, Antares, and Ceres Which dwarf planet doesn't belong?

Answer 34

Antares. It's a star. Pluto, Haumea, Makemake, Eris, and Ceres

Question 35

Only planet that spins on its axis clockwise

Answer 35

Venus

Question 36

Venus and Uranus are Prograde, the rest are Retrograde T or F

Answer 36

F, Venus and Uranus are Retrograde, the rest are Prograde

Question 37

Planet tilted over its axis, it's virtually spinning on its side

Answer 37

Uranus

Question 38

Smallest planet in the Solar System

Answer 38

Mercury

Question 39

Biggest planet in the Solar System

Answer 39

Jupiter

Question 40

Bodies of our solar system evolved from an enormous rotating cloud called the solar nebula

Answer 40

The Nebular Theory

Question 41

Solar nebula consists of?

Answer 41

Hydrogen and Helium atoms, microscopic dust grains, and ejected matter of long-dead stars

Question 42

The formation of the Sun marked what?

Answer 42

It marked the end of the period of contraction and the end of gravitational heating

Question 43

Repeated collisions caused these masses to coalesce into larger asteroid-sized bodies called ___

Answer 43

Planetesimals

Question 44

Name the four protoplanets

Answer 44

Mercury, Venus, Earth, Mars

Question 44

Rocky and metallic pieces not incorporated into planetesimals are called ___

Answer 44

Meteorites