1. Who wrote down the equation for the law of gravitation? a. Copernicus b. Brahe c. Newton d. Galileo e. Kepler. 2. Which of the following most accurately describes the shape of Earth’s orbit around...

1. Who wrote down the equation for the law of gravitation? a. Copernicus b. Brahe c. Newton d. Galileo e. Kepler.

2. Which of the following most accurately describes the shape of Earth’s orbit around the Sun? a. circle b. ellipse c. parabola d. hyperbola e. square

3. Of the following planets, which takes the longest time to orbit the Sun? a. Earth b. Uranus c. Mercury d. Jupiter e. Venus