What is a circumpolar star? Flag this Question Question 21 pts What makes the No

Question

What is a circumpolar star?

Flag this Question

Question 21 pts

What makes the North Star, Polaris, special?

Flag this Question

Question 31 pts

You are standing on Earth's equator. Which way is Polaris, the North star?

Flag this Question

Question 41 pts

Why is it summer in the Northern Hemisphere when it is winter in the Southern Hemisphere?

Flag this Question

Question 51 pts

If the Moon is setting at 6 A.M., the phase of the Moon must be

Flag this Question

Question 61 pts

Which of the following statements about the Moon is true?

Flag this Question

Question 71 pts

If part of the full moon passes through Earth's umbra, we will see a(n)

Flag this Question

Question 81 pts

What happens during the apparent retrograde motion of a planet?

Flag this Question

Question 91 pts

What causes the apparent retrograde motion of the planets?

Flag this Question

Question 101 pts

It is possible to view the Moon in first-quarter phase the day after a total lunar eclipse.

Flag this Question

Question 111 pts

Lunar eclipses can occur only during a

Flag this Question

Question 121 pts

Suppose Earth's axis tilt was significantly greater than its current 23.5 degrees, but Earth's rotation period and orbital period were unchanged. Which statement below would not be true?

Flag this Question

Question 131 pts

Suppose you live in the United States and you see a crescent moon in your evening sky tonight. What will a friend in South America see tonight?

Flag this Question

Question 141 pts

For most of history, the lack of observable stellar parallax was interpreted to mean that

Flag this Question

Question 151 pts

Why did Ptolemy have the planets orbiting Earth on "circles upon circles" in his model of the universe?

Flag this Question

Question 161 pts

The controversial book of this famous person, published in 1543 (the year of his death), suggested that Earth and other planets orbit the Sun.

Flag this Question

Question 171 pts

He developed a system for predicting planetary positions that remained in use for some 1,500 years.

Flag this Question

Question 181 pts

He discovered that the orbits of planets are ellipses.

Flag this Question

Question 191 pts

He discovered that Jupiter has moons.

Flag this Question

Question 201 pts

One of the "nails in the coffin" for the Earth-centered universe was

Flag this Question

Question 211 pts

When we see Venus in its full phase, what phase would Earth be in as seen by a hypothetical Venetian?

Flag this Question

Question 221 pts

Kepler's third law, p2 = a3, means that

Flag this Question

Question 231 pts

Kepler's second law, which states that as a planet moves around its orbit it sweeps out equal areas in equal times, means that

Flag this Question

Question 241 pts

Which of the following statements about scientific theories is not true?

Flag this Question

Question 251 pts

Which practical value did astronomy offer to ancient civilizations?

Flag this Question

Question 261 pts

Ptolemy was important in the history of astronomy because he

Flag this Question

Question 271 pts

What do we mean by a geocentric model of the universe?

Flag this Question

Question 281 pts

The great contribution of Nicholas Copernicus was to

Flag this Question

Question 291 pts

Which of the following was not observed by Galileo?

Flag this Question

Question 301 pts

As long as an object is not gaining or losing mass, a net force on the object will cause a change in

Flag this Question

Question 311 pts

What would happen if the Space Shuttle were launched with a speed greater than Earth's escape velocity?

Flag this Question

Question 321 pts

Suppose an object is moving in a straight line at 50 mi/hr. According to Newton's first law of motion, the object will

Flag this Question

Question 331 pts

According to the universal law of gravitation, the force due to gravity is

Flag this Question

Question 341 pts

The force of gravity is an inverse square law. This means that, if you double the distance between two large masses, the gravitational force between them

Flag this Question

Question 351 pts

The allowed shapes for orbits under the force of gravity are

Flag this Question

Question 361 pts

The mass of Jupiter can be calculated by

Flag this Question

Question 371 pts

Newton showed that Kepler's laws are

Flag this Question

Question 381 pts

Which of the following best describes the origin of ocean tides on Earth?

Flag this Question

Question 391 pts

The frequency of a wave is

Flag this Question

Question 401 pts

The wavelength of a wave is

Flag this Question

Question 411 pts

How are wavelength, frequency, and energy related for photons of light?

Flag this Question

Question 421 pts

From lowest energy to highest energy, which of the following correctly orders the different categories of electromagnetic radiation?

Flag this Question

Question 431 pts

Which of the following statements about X rays and radio waves is not true?

Flag this Question

Question 441 pts

Which of the following is not a good reason to place observatories on remote mountain tops?

Flag this Question

Question 451 pts

Which forms of light are lower in energy and frequency than the light that our eyes can see?

a star that is close to the north celestial pole

Explanation / Answer

Answer:

1. a star that always remains above your horizon

2. It appears very near the north celestial pole.

3. on the northern horizon

4. The Northern Hemisphere is tilted toward the Sun and receives more direct sunlight.

5.full.

6. The Moon's distance from Earth varies during its orbit.

7. partial lunar eclipse.

8. The planet appears to move eastward with respect to the stars over a period of many nights.

9. As Earth passes another planet, the other planet appears to move backward with respect to the background stars, but the planet's motion does not really change.

10. False

11. full moon.

12. The length of each season (for example, the number of days from the summer solstice to the fall equinox) would be significantly longer than it is now.

13. Your friend will see a crescent moon.

14. Earth is stationary at the center of the universe.

15. to explain the fact that planets sometimes appear to move westward, rather than eastward, relative to the stars in our sky

16. Copernicus

17. Ptolemy

18. Kepler

19. Galileo

20. Galileo's observations of the moons of Jupiter.

21. full

22. All of these are correct.

23. a planet travels faster when it is nearer to the Sun and slower when it is farther from the Sun.

24. A theory can never be proved be- yond all doubt; we can only hope to collect more and more evidence that might support it

25. It helped them keep track of time and seasons, and it was used by some cultures for navigation.

26. developed a model of the solar system that made sufficiently accurate predictions of planetary positions to remain in use for many centuries

27. A model designed to explain what we see in the sky while having the Earth located in the center of the universe.

28.create a detailed model of our solar system with the Sun rather than Earth at the center

29. stellar parallax

30. velocity.

Related Questions

Navigate

• Browse (All)
• Browse W
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.