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Astronomy and Physics Quick Quiz

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Test your knowledge of atomic size, orbital speed, density, and more in this quick quiz about fundamental concepts in astronomy and physics.

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Astronomy and Physics Quick Quiz

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Presentation Transcript

  1. Quick quiz 3

  2. What is the typical size of an atomic nucleus? • 10-17 m • 10-15 m • 10-13 m • 10-11 m • 10-9 m

  3. What is the typical size of an atom (and almost exactly the O-H bond length in water) • 10-16 m • 10-14 m • 10-12 m • 10-10 m • 10-8 m

  4. What is the typical speed of a satellite in a low-altitude orbit?(orbit length ~ 40000 km) • 8 ms-1 • 80 ms-1 • 800 ms-1 • 8000 ms-1 • 80000 ms-1

  5. What is the typical density of a metal? • 4000 kgm-3 • 6000 kgm-3 • 8000 kgm-3 • 12000 kgm-3 • 20000 kgm-3

  6. The moment of inertia of a uniform density sphere of radius R and mass M is • 2/5 MR2 • 1/3 MR2 • 2/3 MR2 • 1/2 MR2 • 3/5 MR2

  7. Wien’s constant is ~ 2 x 10-3 m KWhat is the peak wavelength in the blackbody spectrum of a body at 100 K? • 20 microns • 200 microns • 2 mm • 2 cm • 20 cm

  8. How does the average power of a human body compare with a kettle? • 1/100 kettle • 1/20 kettle • 1/5 kettle • 1/2 kettle • 1 kettle

  9. What is (roughly) the average number density of the universe? • 1 particle per parsec cubed • 1 particle per AU cubed • 1 particle per km cubed • 1 particle per metre cubed • 1 particle per mm cubed

  10. A camera on a space mission has a focal length of 102.4 cm. The CCD has 1024 pixels on a side. The pixel resolution is • ~ 1/50 degree • ~ 1/10 degree • ~ 1/5 degree • ~ 1/2 degree • ~ 1 degree

  11. Which body is this? • Eros • Halley • Phobos • Hyperion • Amalthea

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