SEGway home > for educators > sun-earth > about Sunspots >student assessment
|Grade: ____________ Date: ______________|
1. Why is the Sun important to life on Earth? Please list three ways the Sun's light and heat helps us to live.
2. Why did some ancient cultures observe and worship the Sun?
3. How did Europeans such as Galileo observe sunspots?
4. We should never look directly at the Sun. However, can you briefly describe a safe and easy way to observe sunspots? Draw a picture if that is easier.
5. Scientists in the 1600’s did not yet know what caused sunspots. What ideas, beliefs, and opinions did they have about them?
|8. How big is an average sunspot?||a.
the size of San Francisco
b. about 100 miles across
c. about 1000 miles across
d. about the size of the Earth
e. about 100 times the size of the Earth
|9. What happens in the sun’s convection layer?||
a. Heat is transported to the surface by flows of hot plasma.
b. Magnetic fields are drawn down beneath the surface.
c. Light is held for millions of years before escaping.
d. Cool plasma flows back toward the core.
e. a and d
f. a and b
12. It has been speculated that the solar minimum affects the climate of the Earth. Can you name one famous, unusually cold period in history that corresponds to low levels of solar activity?
13. How does the Earth’s magnetic field protect us?
14. What impact does space weather (geomagnetic storms) have on Earth?
a. Satellites can be disabled or have their orbits decay.
15. What is a sunspot? In the space below, please draw a picture of a sunspot, and label as many parts as you can. Draw the magnetic field lines around the sunspot(s).
16. How is a sunspot created? Describe what happens in the Sun to produce a sunspot.
17. Many scientists and astronomers study sunspots. Why is their research important?
18. Please think about the activity you did in the Activity Section of the Sunspots lesson (the sunspot white light vs. x-ray active area measuring and data plotting). What did your plot look like when you finished graphing? Did the points form a relatively straight line, a curve, or where they scattered about the graph? As a science investigator what do you think this means about sunspots and x-ray active areas on the sun?