Download Solar System Review-KEY

Solar System Review-KEY
1. Review the Vocabulary Cards for the unit.
2. Write the planets in order beginning with the planet closest to the sun.
Sun
Mercury
Venus
Earth
Mars
Jupiter
Saturn
Uranus
Neptune
3. When you turn a model of the Earth around on its axis, what does this
motion represent? The model represents why the Earth has day and
night. It appears to make the sun rise and set.
4. How do scientists classify stars? Explain. Scientists classify stars by size,
color, and brightness.
a. Size: solar radi-->supergiants--> dwarfs
b. Color: blue (hot) --> yellow (middle) --> red (cool)
c. Brightness: how bright the star is also takes into account how far it
is from Earth
5. What is a constellation? Give and example. Constellations are groups of
stars that form an imaginary picture in the sky. Examples include Taurus,
Ursa Major, O’Ryan, The Big Dipper, etc.
6. Which object in the night sky moves: galaxies, constellations, stars, or
planets? Explain your answer. Planets move in the night sky because
they revolve around the star/a star. Stars only APPEAR to move because
Earth revolves around the Sun. Planets are in a different position each
night.
7. Explain the difference between a planet and a star. Stars are huge balls of
superheated gases. Planets are large objects that orbit a star. In the
night sky, planets shine steadily while stars shine with a pulse (they
twinkle—twinkle twinkle BIG BIG star!)
8. What is our sun made up of? The sun is a huge ball of gases- hydrogen and
helium.
9. What are three types of technology that scientists use to explore space?
Explain how each one is used.
a. Telescopes (ex. Hubble Space Telescope) which are used to see
faraway objects in the night sky.
b. Manned “Crewed” Missions on space crafts which are used to
collect information and samples from planets
c. Satellite are sent into orbit to collect data and pictures
10. Explain the difference between the Earth revolving around the sun and the
Earth’s rotation. Rotation of the Earth is when the Earth spins around on
its axis (the imaginary line down the middle of the Earth), this takes 24
hours to complete. A revolution is when the planet (Earth) orbits (in a
path) around the sun. One Earth revolution takes 365 days, or one whole
year.
11. Why do the positions of the stars seem to change as seasons change? As
Earth orbits the sun, we see different parts of space at different times of
the year. The Earth moves when it rotates and revolves, causing us to see
different parts of space as the year progresses.
12. Label each stage of the phases of the Moon.
New Moon-->Waxing Crescent-->First Quarter-->Waxing Gibbous (14
days)--> Full Moon--> Wanning Gibbous--> Third/Last Quarter--> Wanning
Crescent (28 days)
**Waxing- Shining** Wanning-Fading**