Astro 7N Test 1 Questions And Revised Correct Answers

Astro 7N Test 1 Questions And Revised Correct Answers According to Newton's 2nd law of motion, if the net force acting on the object increases while the mass of the object remains constant, what happens to acceleration? - ANSWER : acceleration increases If the Earth were moved to half its current distance from the Sun, how would the force of gravity by the Sun on Earth change? - ANSWER : 4 times stronger What did Newton's Law of Universal Gravitation tell us about how gravity works? - ANSWER : The force of gravity from the Sun will be stronger on an object with more mass. The Earth radius is about 6400 km. If you were in orbit in the Space Station 150 km above the ground, the force of gravity you feel from Earth would be: - ANSWER : slightly weaker than when you are standing on earth If you were to sit on the ground, there would be a force due to gravity pulling you toward the Earth. Which of the following is true according to Newton's 3rd law? - ANSWER : you are pushing the earth away from yourself with the same force What would happen to the Earth if the Sun's gravity somehow 'turned off' instantaneously? - ANSWER : It would continue to move in a line in the same direction it was moving when the gravity turned off. When the northern hemisphere is tilted toward the sun, the 'average daily temperature' is marked as ________, suggesting that the northern hemisphere is experiencing _______. - ANSWER : warm; summer And, on the opposite side of the orbit, when the northern hemisphere is tilted the farthest away from the sun, the 'average daily temperature' is marked as _________, suggesting that the northern hemisphere is experiencing ________. - ANSWER : cool; winter I guess in the Southern Hemisphere it's ________ in late June, and ________ is in late December. - ANSWER : winter; summer two dates on the opposite side of the Earth's orbit near - ANSWER : March 21, September 21