Download summ assess astro sci 8 20152016

Answer any 5 questions. Answer completely, explain your thinking (thoroughly)—even on
the multiple choice. Label your answers. Put your name and period on each piece of paper
you use. You may use your paper or digital science notebook, BUT YOU MAY NOT CONSULT
ANY WEBSITE FOR INFORMATION OR ANSWERS—DOING SO WILL BE CONSIDERED
CHEATING. IPADS MUST BE KEPT IN VIEW ON THE TOP OF THE TABLES AND NOT IN LAPS. All
work must be your own. No talking or consulting other students.
1. At around 16 km / s, it took the New Horizons spacecraft to travel from earth to Pluto a
little over 9 years. How long did it take you to travel from earth to Pluto in your model? How
different was your speed from the New Horizon’s? At what speed would you have to walk in
the model to mimic New Horizon’s actual speed?
2. Identify the aspects of your model that correspond to “reality.” Where does your model
“break” with reality?
3. Approximately how many times has your model “shrunk” from the actual size of the solar
system?
4. What surprised you most about the scaling distance and size in the solar system by the
same factor? Why?
5. The distance of planets from the sun is most clearly related to
a) the time for one revolution
b) the size of the planet
c) the composition of the planets' atmospheres
d) the time for one rotation
6. Which of the following is/are not evidence to support an elliptical orbit of the earth
around the sun
a) the number of days from the spring equinox to the fall equinox is greater than from the
fall equinox to the spring equinox
b) the sun’s apparent diameter is slightly smaller in the summer than in the winter
c) the sun is never directly overhead outside of the tropics
d) the practice of daylight savings time—the practice of moving clocks ahead in the spring
and back in the fall
7. Which of the following is not true.
All planets in our solar system
a) orbit in nearly the same plane
b) orbit in the same direction
c) have moons
d) travel faster when they are closer to the sun
8. The direction of the orbits of planets in star-planet systems
a) is the same throughout the universe
b) is determined by the specific circumstances of the formation of each system
c) is always the same as the direction of rotation
d) cannot be determined
9. Which of the following is/are not true
a) With gravitational attraction the sun pulls on the planets but the planets do not pull on
the sun
b) Gravity is a force where every mass is attracted to every other mass
c) Gravitational force gets weaker as the distance increases between masses
d) Gravitational force depends on the size of the masses
10. What is the best explanation for why we can see Mercury, Venus, Mars, Jupiter, and
Saturn without a telescope but cannot see Uranus, Neptune, and Pluto.
a) The respective distances from the earth
b) The size of the planets
c) The speed of revolution
d) The amount of light produced by each planet
11. Use your project chart on the size and distances of the planets to answer the following
questions. The sun’s actual diameter is ~1,392,000km. If in a scaled model, we make the
sun’s diameter 200mm, what would be the scale diameter of one planet?
a.
Venus 1.7
b.
Earth 1.8
c.
Mars .9
d.
Saturn 16.7
e.
Uranus 6.7
f.
Neptune 6.5
g.
Pluto .3
12. Use your project chart on the size and distances of the planets to answer the following
questions. If in a scaled model of our solar system, we set the distance scale as 1m = 10
million km, calculate the scaled distance between two of the following planets and the sun.
a.
Mercury 58,000,000 5.8
b.
Earth 150,000,000 15
c.
Jupiter 779,000,000 77.9
d.
Pluto 5,913,000,000 591.3