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In your own words explain what the following terms mean/refer to:
Focal plane
Focal length
1. Describe how to hold a star chart so that is matches the sky.
2. Describe sunspots and the sunspot cycle.
3. Describe and sketch the set-up of and annotate one projection method and one filtered method
for safely viewing the sun.
4. Convert 80.0 km/hr to ft/s, record your answer using significant figures.
5. The Earth is approximately 12 600km in diameter, the Moon is approximately 3 600km in
diameter, and the two are approximately 380 000km apart. Let 1cm equal 550km. Calculate
the size and distance between the Earth and the Moon at this scale.
6. Describe in your own words why Polaris does not seem to move during the night.
7. Explain Aristotle’s chief argument against the heliocentric model.
8. Due to precession, how will Earth’s stars and seasons be different in 13000 years?
9. Describe two properties of a converging lens. Which property is done with the objective lens of
a telescope? Which property is done with the eyepiece of a telescope?
10. Build a simple telescope with the biggest magnification. Sketch and label your telescope set up.
11. Describe in your own words the three different types of spectra and how each are produced.
12. Find an example of each type of spectra in or around the lab.
13. Explain why changes in frequency occur. How can we use a change in frequency to find the
speed of an object?