Set 23B (Earth Science)

1. What is essential to a planet being defined as a planet (and not a dwarf planet)?

• 1. Does not share space with other objects of significant size (other than moons)

• 1. Orbits the sun

• 1. Has a spherical shape

• Has an elliptical shape

• 

A (a)   planet does not have enough mass (and therefore enough gravity) to clear other objects out of its path.

Planets that have about the same density as Earth (and are composed primarily of rock) are called __ planets.

• terrestrial

• gas giant

• Jovian

• 

Tags

NGSS.MS-ESS1-3

Planets that are composed primarily of gas (or frozen gas) are called ___.

• terrestrial planets

• gas giants

• Jovian planets

• 

Tags

NGSS.MS-PS1-1

1. ​ (a)   has significant amounts of ​ (b)   and ​ (c)   – two essential substances for life.

• Earth
• oxygen
• water
• Saturn

Tags

NGSS.MS-ESS2-4

NGSS.MS-LS1-6

NGSS.MS-LS2-3

​ (a)   planets are positioned between Earth and the ​ (b)   ; while ​ (c)   planets are between Earth and the ​ (d)   .

• inferior
• superior
• Sun
• Kuiper Belt
• moon
• middle

Tags

NGSS.MS-ESS1-1

label the planets

a

b

c

d

e

f

g

h

Mercury

Venus

Saturn

Pluto

Mars

Jupiter

Uranus

Neptune

Tags

NGSS.MS-ESS1-1

NGSS.MS-ESS1-3

Categorize facts by planet:

Groups:

(a) Mercury

,

(b) Venus

,

(c) Jupiter

,

(d) Mars

• It spins very quickly

• Its atmosphere is hot, dense, and composed of carbon dioxide and sulfuric acid

• It orbits the sun in only 1 ½ (of it's) days !

•  named after the Roman god of war

• you would weigh more than 2x what you do on Earth

• atmosphere that is less than 1% that of Earth’s

• nearly 2 ½ the mass of all the other planets combined

• named after the Roman god of speed/messenger

• named after the Roman god of beauty and love

•  temperatures up to 860o F

• has a retrograde rotation

• named after the supreme Roman god

• It has a great red spot (2-3 times as big as Earth)

• average surface temperature is -81o F

• temperatures from 797o F to t0 –310o F

• Its atmosphere is composed nearly entirely of carbon dioxide

The hottest planet:

• Mercury

• Venus

• Earth

• Mars

• Pluto

1. Astronomers estimated __ likely position by using Newton’s law of gravity.

• Neptune's

• Saturn's

• Earth's

• the Moon's

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4