Ch 26 Study Guide
Multiple Choice
Identify the choice that best completes the statement or answers the question.
____ 1. A telescope that uses a set of lenses to gather and focus light from distant objects is a
a. / reflecting telescope. / c. / radio telescope.b. / refracting telescope. / d. / space telescope.
____ 2. The universe began about
a. / 10 million years ago. / c. / 14 billion years ago.b. / 1 billion years ago. / d. / 50 billion years ago.
____ 3. Which of the following has a visible wavelength?
a. / an infrared wave / c. / a gamma rayb. / an X ray / d. / a violet wave
____ 4. Telescopes have been sent to space because ground-based telescopes
a. / cannot detect invisible electromagnetic radiation.b. / cannot investigate stars.
c. / experience interference from Earth’s atmosphere.
d. / do not work in dry air.
____ 5. Which is NOT part of our solar system?
a. / the sun / c. / Jupiterb. / the Milky Way / d. / comets and asteroids
____ 6. A constellation’s change in position over several hours is caused by
a. / Earth’s revolution around the sun. / c. / Earth’s rotation on its axis.b. / the tilt of Earth’s axis. / d. / the movement of stars.
____ 7. Leap Year was established because
a. / February is shorter than the other months.b. / each complete revolution of Earth takes 365 1/4 days.
c. / the number of full moons in a year is not a whole number.
d. / July and August are longer months.
____ 8. The Northern Hemisphere has the most hours of daylight at the
a. / vernal equinox. / c. / winter solstice.b. / autumnal equinox. / d. / summer solstice.
____ 9. Foucault’s pendulum provided evidence that
a. / Earth rotates. / c. / Earth has an elliptical orbit.b. / Earth revolves around the sun. / d. / Earth’s axis tilts.
____ 10. If it is Monday west of the International Date Line, what day is it east of the line?
a. / Sunday / c. / Tuesdayb. / Monday / d. / Wednesday
____ 11. A light-year equals
a. / 150 million km. / c. / 14 billion km.b. / 9.4607 ´ 1012 km. / d. / 300 million m/s.
____ 12. The event which began the universe was the
a. / Milky Way. / c. / big bang.b. / black hole. / d. / electromagnetic spectrum.
____ 13. A constellation’s changing position in the sky, at the same time of the evening, over a period of several weeks is evidence that
a. / Earth is round. / c. / Earth rotates on its axis.b. / Earth’s axis is tilted. / d. / Earth revolves around the sun.
____ 14. The telescope that solved the problem of color separation was the
a. / Hubble space telescope. / c. / Overwhelmingly Large Telescope.b. / refracting telescope. / d. / reflecting telescope.
____ 15. The Coriolis effect provides evidence that
a. / Earth rotates on its axis. / c. / The moon revolves around Earth.b. / Earth revolves around the sun. / d. / Earth has an elliptical orbit.
____ 16. Which telescope detects invisible electromagnetic radiation?
a. / radio telescope / c. / refracting telescopeb. / optical telescope / d. / reflecting telescope
____ 17. The period between successive full moons is
a. / 24 hours. / c. / 31 days.b. / 29.5 days. / d. / 365 days.
____ 18. Invisible electromagnetic radiation was discovered with a
a. / compass. / c. / thermometer.b. / telescope. / d. / prism.
____ 19. Each of Earth’s standard time zones covers about
a. / 10°. / c. / 24°.b. / 15°. / d. / 36°.
____ 20. A benefit that 20th and 21st century space programs have brought to an area outside of astronomy is
a. / improved heart pumps.b. / telescopes for invisible radiomagnetic waves.
c. / more accurate calendars.
d. / more efficient automobile fuel.
____ 21. One line of evidence of Earth’s revolution around the sun is
a. / the Coriolis effect.b. / Foucault’s pendulum.
c. / the varying positions of a constellation over a period of hours.
d. / the varying positions of a constellation over a period of weeks.
____ 22. Different colors are the result of
a. / varying speeds different colors of light travel.b. / varying wavelengths of different colors of light.
c. / varying temperatures of different colors of light.
d. / breaking light in a prism.
____ 23. Our current calendar is most like that of the ancient
a. / Egyptians. / c. / Aztecs.b. / Babylonians. / d. / Romans.
____ 24. When it is Saturday east of the International Date Line, what day is it west of the line?
a. / Friday / c. / Sundayb. / Saturday / d. / Monday
____ 25. When Earth is 147 million km from the sun, it is at its
a. / ellipse. / c. / aphelion.b. / perihelion. / d. / astronomical unit.
____ 26. What problem is solved by sending telescopes into space?
a. / interference of Earth’s atmosphere in detecting electromagnetic radiationb. / inability of Earth telescopes to detect invisible electromagnetic radiation
c. / interference of dry air in detecting electromagnetic radiation
d. / interference of gamma rays in detecting electromagnetic radiation
____ 27. What milestone in human space exploration took place in 1969?
a. / the first man was launched into spaceb. / the first human moon landing
c. / the first woman was launched into space
d. / the first flight of the space shuttle
____ 28. A type of electromagnetic radiation that has waves that are longer than waves of visible light is
a. / ultraviolet. / c. / gamma ray.b. / X ray. / d. / infrared.
____ 29. A region where daylight savings time is unnecessary is
a. / the United States. / c. / the equator.b. / the Arctic circle. / d. / the South Pole.
Completion
Complete each statement.
30. The Northern Hemisphere has the most hours of daylight at the ______.
31. The beginning of fall in the Northern Hemisphere is marked by the ______.
32. The moment when the sun appears to cross the celestial equator is a(n) ______.
33. The Northern Hemisphere has the fewest daylight hours at the ______.
34. The beginning of spring in the Northern Hemisphere is marked by the ______.
Short Answer
35. Explain why the Overwhelmingly Large Telescope will be a reflecting telescope and not a refracting telescope.
36. What recent events have focused public attention on the risks of human space exploration
37. If Earth is 150,000,000 km (avg) from the sun, in AU measurement how far are we from the sun? If Mars is 228,000,000km (avg) from the sun, in AU measurement how far is it from the sun? Write both (km) distances in scientific notation.