Download Ex s16 solution

9. Our Sun surface temperature is about 5800 K.
What is the primary wavelength radiated by the
Sun?
a. 200 nanometers
b. 1000 nanometers
c. 600 nanometers
d. 800 nanometers (also accept)
10. Here is a graph showing the number of sunspots since 1950. The dashed line is a projection of
the number of sunspots until 2025. According to this graph the approximate number of
sunspots projected for the year 2020 is
a. 200
b. 150 ( I also accept this)
c. 50
d. can’t tell from this graph
11. In the development of a terrestrial planet, the stage of ____ is when dense material settled to
the core and less dense to the outer parts.
a. differentiation
b. cratering
c. glaciation
d. accretion
12. The greenhouse effect produces excess heat in a planet's atmosphere by
a. trapping infrared radiation from escaping into space.
b. clouds blocking the surface from receiving any infrared radiation.
c. Trapping light gases from escaping into space
d. trapping ultraviolet light in the upper atmosphere of the planet.