Question

1. which graph best represents the relative periods of rotation of mercury, venus, earth, and mars?
2. which of the following celestial objects has the most elliptical orbit?

(1) pluto (2) neptune (3) mercury (4) ceres

1. which celestial feature is largest in actual size?

(1) jupiter (3) the milky way
(2) the moon (4) the sun

1. which of the following celestial objects has an axial tilt most similar to earths?

(1) saturn (2) earths moon (3) neptune (4) uranus

Explanation:

• Question 14: Based on the knowledge of the rotation periods of Mercury (58.6 days), Venus (243 days), Earth (1 day), and Mars (1.03 days), Venus has the longest rotation period, followed by Mars, Earth, and Mercury. Graph (3) correctly represents this order.
• Question 15: Pluto has a highly elliptical orbit compared to Neptune, Mercury, and Ceres.
• Question 16: The Milky Way is a galaxy, which is much larger in size than Jupiter (a planet), the Moon (a satellite), and the Sun (a star).
• Question 17: Saturn has an axial tilt of about 26.73 degrees, which is relatively close to Earth's axial tilt of about 23.44 degrees. The Moon has a negligible axial tilt, Neptune's axial tilt is about 28.32 degrees, and Uranus has a very extreme axial tilt of about 97.77 degrees.

Answer:

1. (3)
2. (1) Pluto
3. (3) the Milky Way
4. (1) Saturn