1. A massive system of
million stars held
together by gravity.
4.
How
long
does
it take
to go
from
C to G?
7.
Any condition that may affect
the outcome of an
experiment?
10. Draw a Gibbous moon.
2. What is the density formula?
3. The distance light travels in a
year.
5. Which position is Full?
6. Which position is New?
8. Which side of the moon is
dark?
9. This phase just followed a
new moon what phase is it?
11. Inference or
observation: It will rain
tomorrow.
12. Which planets are the
densest?
13.Which planets do not
have any moons?
14. Which planets are gas
giants?
15. Which planet has the
shortest orbital time?
16. T/F: From the earth you can
only see one side of the
moon.
17. A systematic approach to
answering a question.
18. T/F: When I cut a block in
half its mass will be ½ and its
density will be ½.
19. T/F From the moon you could
only see one side of the
earth.
20. T/F Pluto is a gas giant.
21. Why is Pluto no longer
considered a planet?
Name______________________________
date_____________
Study Guide Science 8 Test Thursday 10/21:


33 multiple choice and short answers.
Use old quizzes and study cards to practice
Know how to read a chart
Topics:
Scientific Method:
Control, hypothesis, variable
Inference, observation
Density
Metric System
Astronomy:
Light year, galaxy
Stars, HR diagram
Phases of the moon:



Gibbous, Crescent, Full, New, Waxing, Waning
Identify bright and dark side from diagram
Identify location of full and new moon
Lunar Facts:






8 phases
No atmosphere
Apollo mission landings
Less gravity
Orbits earth in 28-29 days
Force of gravity keeps all planets, asteroids and moons in their obits.
Inner Planets: solid dense orbit close to the sun with shorter time for orbits.



Mercury: smallest, closest to sun, no atmosphere (no moon)
Venus: around the size of earth, dense atmosphere, hottest planet because of cloud covering. (no moon)
Mars: thin atmosphere, may have water, landed probes on surface. Current probe Curiosity Mars Rover
Outer Planets: Jupiter, Saturn, Uranus, Neptune



All are Large and made of mostly gas (Gas Giants)
All have many moons
All have rings , some thicker than others (Saturn)
Pluto- Orbits in an elongated path outside of the plane of the rest of the planets. Now considered a “dwarf planet”
Answers:
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
Galaxy
Density = mass/volume
Light year
14 days
E
A
variable
right
cresent
inference
Inner planets mercury- mars
Mercury, Venus
Jupiter, Neptune, Saturn, Uranus
Mercury
true
scientific method
False mass ½ density same
False earth rotates moons sees all sides
False
Elliptical orbit, too small, orbit not in line with other planets, located in an area with lots of plutos