Presentation on theme: "TEST QUESTION 3-1 Kepler’s second law (law of equal areas) refers to"— Presentation transcript:
1TEST QUESTION 3-1 Kepler’s second law (law of equal areas) refers to vA: the speed of a planet move around the Sun at different timesxB: changes in the area on the surface of the planet at different locations in its orbitxC: the relationship between a planet’s radius and the semi major axis of its orbitxD: all planets’ orbits have elliptical shape
2Test question 3-2If Saturn’s semi major axis is nine times that of the Earth, its period would be xA: same as that of the Earth, xB: three times smaller than that of the Earth, xC: nine times larger than that of the Earth vD: twenty seven times larger than that of the Earth
3Test Question 3-3:Galileo’s strongest argument to support the heliocentric model of the solar system is based on his observation ofxA: craters on the MoonvB: appearance of Venus at different phases ofits orbitxC: Jupiter’s moons also follow Kepler’s third lawxD: acceleration of objects falling from theleaning tower of Pisa
4Test question 3-4 With force acting on it, a moving object xA: would preserve its momentumvB: may change its direction without changingits speed,xC: change its massxD: would always come to a halt
5Test question 3-5Arnold Schwarzenegger and Michael J Fox stand on two skate boards and try to push each other apart. Arnold’s mass is three times that of Michael. ArnoldxA: accelerates at three times faster thanMichaelxB: accelerates at the same rate as MichaelvC: accelerates at three times slower thanxD: stands still.
6Test question 3-6If astronomer A. Jolie lands on a newly discovered planet, Kepler 23 which has twice the radius and the same mass as the earth, her weight would becomevA: a quarter of that on the EarthxB: half of that on the EarthxC: same as that on the EarthxD: double that on the Earth.
7Test question 3-7If the Moon halve its distance to the Earth, tides on the Earth would bevA: much strongerxB: remain the samexC: much weakerxD: become chaotic.
8Test question 3-8Suppose a planetary system around a star that is one fourth as massive as our Sun. If that planetary system has a planet with twice the size as Earth orbiting at a distance of 1AU, its orbital period would bexA) eight yearsxB) four yearsvC) two yearsxD) half a year
9Test question 3-9 Venus has the same mass as the Earth. But its semi major axis is 0.8 AU and orbital period is 0.7 year.Venus’ angular momentum isxA) 0.56 times that of the EarthxB) 0.8 times that of the EarthvC) 0.9 times that of the EarthxD) same as the Earth