NAME DATE Worksheet 62: Ellipse and Moon 1. The diagram below represents the elliptical orbit of the Earth around the Sun. STRIVE 2. The diagram below represents the orbit of a spacecraft around the sun. The eccentricity of the spacecraft's orbit is A) more eccentric than the orbit of any planet in the solar system B) more eccentric than planets 300 million km from the sun but less than those 100 million km from the sun C) less eccentric than planets with a density less than 5 gm/cm 3 D) more eccentric than Earth's orbit but less eccentric than Mars' orbit Which equation should be used to find the eccentricity of the Earth's orbit? A) eccentricity = 5,000,000 km 299,000,000 km - 5,000,000 km B) eccentricity =299,000,000 km 5,000,000 km C) eccentricity = 299,000,000 km - 5,000,000 km D) eccentricity = 5,000,000 km 299,000,000 km 3. Base your answer to the following question on the diagram below, which represents the path of a planet in an elliptical orbit around a star. Points A, B, C, and D indicate four orbital positions of the planet. The eccentricity of the planet's orbit is approximately A) 0.65 B) 1.55 C) 0.18 D) 5.64 4. What is the approximate eccentricity of the ellipse? A) 0.15 B) 1.4 FOR C) 0.40 D) 0.73 85!!!! 5. An observer on the Earth measured and recorded the slight changes in the apparent diameter of the Moon for 2 months. A graph of the data is shown below. STRIVE Which statement best explains the observation: A) The distance from the Earth to the Moon varies in a cyclic manner. B) The Earth revolves around the Moon each month. C) The Moon actually increases and decreases in size each month. D) The apparent diameter of the Moon is always greatest at the new-moon phase. FOR 85!!!!