21st Century Astronomy: The Solar System (Sixth Edition)
6th Edition
ISBN: 9780393691283
Author: Laura Kay; Stacy Palen; George Blumenthal
Publisher: W. W. Norton
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Chapter 3, Problem 4QP
To determine
What is meaning of an inferior planet.
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Solar eclipse will take place when:
A. the sun is between the moon and the earth
B. the earth is between the moon and the sun
C. the moon is between the sun and the earth
D. the moon does not lie on the line joining the sun and the earth
Each year, the radius of the moon’s orbit increases by about 3.8 cm. How does this change affect the length of a month?A. A month gets longer.B. A month gets shorter.C. The length of a month stays the same.
Quèstion 19
The weight of 2 kilograms of iron on Earth's surface is
OA. the same on the moon.
B. greater on the moon.
C. less on the moon.
D. zero.
E. None of them
Chapter 3 Solutions
21st Century Astronomy: The Solar System (Sixth Edition)
Ch. 3.1 - Prob. 3.1ACYUCh. 3.1 - Prob. 3.1BCYUCh. 3.2 - Prob. 3.2CYUCh. 3.3 - Prob. 3.3CYUCh. 3.4 - Prob. 3.4CYUCh. 3 - Prob. 1QPCh. 3 - Prob. 2QPCh. 3 - Prob. 3QPCh. 3 - Prob. 4QPCh. 3 - Prob. 5QP
Ch. 3 - Prob. 6QPCh. 3 - Prob. 7QPCh. 3 - Prob. 8QPCh. 3 - Prob. 9QPCh. 3 - Prob. 10QPCh. 3 - Prob. 11QPCh. 3 - Prob. 12QPCh. 3 - Prob. 13QPCh. 3 - Prob. 14QPCh. 3 - Prob. 15QPCh. 3 - Prob. 16QPCh. 3 - Prob. 17QPCh. 3 - Prob. 18QPCh. 3 - Prob. 19QPCh. 3 - Prob. 20QPCh. 3 - Prob. 21QPCh. 3 - Prob. 22QPCh. 3 - Prob. 23QPCh. 3 - Prob. 24QPCh. 3 - Prob. 25QPCh. 3 - Prob. 26QPCh. 3 - Prob. 27QPCh. 3 - Prob. 28QPCh. 3 - Prob. 29QPCh. 3 - Prob. 30QPCh. 3 - Prob. 31QPCh. 3 - Prob. 32QPCh. 3 - Prob. 33QPCh. 3 - Prob. 34QPCh. 3 - Prob. 35QPCh. 3 - Prob. 36QPCh. 3 - Prob. 37QPCh. 3 - Prob. 38QPCh. 3 - Prob. 39QPCh. 3 - Prob. 40QPCh. 3 - Prob. 41QPCh. 3 - Prob. 42QPCh. 3 - Prob. 43QPCh. 3 - Prob. 44QPCh. 3 - Prob. 45QP
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- What evidence can you cite that planets orbit other stars?arrow_forwardThe diameter of the Moon across its equator is 3476 kilometers. If a kilometer equals 0.6214 miles, what is the Moon’s diameter in miles?arrow_forwardIf the orbital distance to a planet doubles, its period will be a.Half b.Larger, but less than double c.More than double d.less than half e.Doublearrow_forward
- 6. Determine what the period of revolution of the Earth would be if its distance from the Sun were 4 AU rather than 1 AU. Assume that the mass of the Sun remains the same.arrow_forward1. Mars takes 1.88 years to complete one orbit around the sun. What is its average distance from the sun?arrow_forward3. The period of rotation of Mars is 1 day and 37 minutes. Determine its frequency of rotation in Hertz.arrow_forward
- Kepler's third law of planetary motion describes the relationship between the of a planet's orbit and its period. A. velocity B. semi- major axis C. acceleration D. major axisarrow_forwardThe rotation of the planets around the sun is governed by: A. The gravitational field of the sun. B. The gravity of the stars. C. The heat energy of the sun. D. The gravity of the other planets of the solar system. Kelper's second law relates between them: O A. The time period of rotation of the orbiting planet around the sun and the average distance of the planet to the sun. OB. The time period of rotation of the orbiting planet around the sun and the average distance of the planet to the earth. C. The time period of rotation of the orbiting planet around the sun and the average distance of the planet to the moon. OD. The time period of rotation of the orbiting planet around the earth and the average distance of the planet to the sun.arrow_forwardWhich of the following is NOT a dwarf planet? a. Pluto b. Eris c. Vesta d. Ceres e. Haumea The Earth's magnetic field keeps our planet's a. temperature from rising too much b. moon in its current orbit c. atmosphere safe from the solar wind d. spin axis from wobbling too mucharrow_forward
- 16.arrow_forwardWhen tidal bulges are NOT in a direct Earth-moon line but slightly ahead of the moon, a. Earth’s gravity weakens. b. their gravitational field pulls the moon forward in its orbit, causing it to recede from Earth. c. their gravitational field pulls the moon back in its orbit, causing the moon to fall toward Earth. d. Earth’s gravity strengthens, causing the moon to orbit faster. e. the tidal bulges have no effect on the moon.arrow_forwardKepler's third law of planetary motion describes a relationship between the__ * a, shape of orbit and the location of the Sun. b. orbital velocity and position in orbit c. distance from the Sun and length of year. d. path of epicycle and position.arrow_forward
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