Transcript Chapter 27 Study Notes

Chapter 27 Study Notes
Planets of the Solar System
Chapter 27 Section 1
Formation of the Solar System
1

A rotating cloud of gas and dust from
which Earth’s solar system formed is
called a solar ______.
nebula
2

About ____
99% of all matter contained in the
solar nebula now exists in the sun.
3

Small bodies from which planets
formation of
originated during the early ________
the solar system are called
____________.
planetesimals
4

When the solar system formed, smaller
bodies joined together through collision
and the force of ______
gravity to form larger
bodies called __________.
protoplanets
5

Small bodies that orbit planets are called
moons
______.
6

Young Earth formed a core, mantle, and
differentiation
crust in a process called ___________.
7

Around the ____
core of Earth is an iron- and
magnesium-rich rock layer called the
______.
mantle
8

When early Earth’s atmosphere
helium and hydrogen gases were
formed, ______
lost because Earth’s ______
gravity was too
weak.
9

The early __________
atmosphere developed when
many volcanic eruptions released large
amounts of gases in a process called
_________.
outgassing
10

The early oceans became _____
salty when
dissolved solids were carried from land
into the oceans.
Chapter 27 Section 2
Models of the Solar System
11

Copernicus proposed a ___________
heliocentric
model of the universe, in which the planets
revolve at different speeds around the sun.
12

Kepler’s ____
first law states that planets orbit
ellipses
the sun in paths called _______.
Chapter 27 Section 3
The Inner Planets
13

Impact _______
craters are caused by collisions
objects in space.
with _______
14

The factors that contribute to Mercury’s
daily temperature fluctuation of about
600°C are the planet’s slow _______
rotation and
it is the closest planet to the ____.
sun
15

Venus is a planet with a runaway
greenhouse effect.
___________
16

The right combination of temperature,
water and oxygen supports ___
life on
______,
Earth.
17

_____
Mars is the planet that has _______
seasons like
Earth’s because its axis tilts at an almost
identical angle.
18

Mars’s volcanoes are _____
larger than those of
Earth because Mars has no moving
tectonic plates.
19

_____
Mars is a planet which has _______
volcanic
regions that may still be active.
Chapter 27 Section 4
The Outer Planets
20

The _______
asteroid belt can be found between
Mars and Jupiter
the planets _____
21

Jupiter’s Great _____
Red Spot and Neptune’s
________
storms
Great Dark Spot are both raging ______.
22

The least ______
dense planet in the solar
Saturn
system is _______.
23

Neptune’s Great _____
Dark ____
Spot is a giant
storm.
24

A region of the solar system just _______
beyond
Neptune’s orbit, which contains small
bodies made mostly of ice, is called the
______
Kuiper belt.
25

_______
Planets that circle stars other than
exoplanet
Earth’s sun are called _________.
THE END