Science Ch 17

Question 1

Why is our planetary system named the solar system?

Answer 1

Because it revolves around the sun

Question 2

What is the latin word for sun?

Answer 2

Sol from which the word solar comes from

Question 3

Where is our Planetary system located?

Answer 3

It is located in the outer spiral arm of the Milky Way galaxy

Question 4

What is the Solar system made up of?

Answer 4

The sun, eight regular planets, many dwarf planets, many moons, astroids, and comets

Question 5

The earth and all the other planets follow a path called…

Answer 5

Called an orbit

Question 6

What are the shape of orbits?

Answer 6

Elliptical (oval shaped)

Question 7

What is a revolution?

Answer 7

Earth’s one full orbit around the sun

Question 8

How long does it take the earth to orbit around the sun?

Answer 8

It takes the Earth 365 1/4 days To orbit the sun

Question 9

What does 365 1/4 days equal?

Answer 9

1 YEAR

Question 10

What are axis?

Answer 10

An imaginary line that runs through the center of the earth from the North Pole to the South Pole.

Question 11

How does Earth spin?

Answer 11

By rotating on a tilted axis

Question 12

What is it called when earth spins one full time around its axis?

Answer 12

It is called a rotation

Question 13

How long does it take the earth to rotate around its axis once?

Answer 13

24 hours

Question 14

What causes day and night?

Answer 14

Earths rotation

Question 15

What is the north hemisphere experiencing when the earth is closest to the sun and why?

Answer 15

The north hemisphere is experiencing winter because the north is facing away from the sun

Question 16

When the earth is farther away from the sun what is the North Hemisphere experiencing and why?

Answer 16

They are experiencing summer because we face the sun directly, even though we are farther away

Question 17

Name the eight planets in our solar system.

Answer 17

Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune

Question 18

What do we believe the earth can do that other planets can’t do?

Answer 18

Believe earth is the only one that can support life

Question 19

What is the distance between the planets measured in?

Answer 19

They are measured in astronomical units or AU

Question 20

What is the distance between the earth and the sun in AU or astronomical units?

Answer 20

1AU which is 93,000,000 miles

Question 21

What is Mercury?

Answer 21

Mercury is the planet closest to the sun

Small planet with metal-core

Question 22

What is Venus?

Answer 22

Second planet from the sun
Same size as earth
The brightest planet

Question 23

What is Earth?

Answer 23

Third planet from the sun
Mostly covered with water
Home to me and you

Question 24

What is Mars?

Answer 24

Fourth planet from the sun
The red planet
Has a mountain on it that is twice the size of Mount Everest

Question 25

What is Jupiter?

Answer 25

Fifth planet from the sun
Very wide
How’s the red spot on the planet which is a massive storm brewing for The last 300 years
Known as a gas giant because it is made up of gas and has no solid surfaces

Question 26

What is Saturn?

Answer 26

The sixth planet from the sun
Has icy rings around it
Like Jupiter, Saturn is a gas giant

Question 27

What is Uranus?

Answer 27

Seventh from the sun
Spins on its side
Also a gas giant
Mostly made up of methane gas which is what causes its blue/green color

Question 28

What is Neptune?

Answer 28

Eighth planet from the sun
Very windy
A gas giant made up of mostly helium and hydrogen

Question 29

What are space probes?

Answer 29

They are spacecraft launched from earth to go into space to take pictures and gather information about the planets

Question 30

What was launched in 2004 and landed on which planet?

Answer 30

Two space probes were launched into space and landed on Mars

Question 31

What has the voyager flown past and what did it gather?

Answer 31

The Voyager has flown past Neptune, Jupiter, and Saturn to gather information on those planets.