The main difference between the geocentric model and the heliocentric model is that --
a. the heliocentric model has the Sun at its center.
b. the geocentric model has the moon at its center.
c. the heliocentric model has the Earth at its center.
d. the geocentric model has the largest gravitational pull.
A
Which of the following was a creation of the Sarsen Circle with a Heel Stone to indicate the summer and winter solstices?
a. Anasazi Indians
b. Mayan Indians
c. Stonehenge
d. Angkor Wat
Which of the following civilizations recorded the supernova creating the Crab Nebula in 1054 A.D., had a sun dagger to track the equinoxes, and a solar observatory called the Hovenweep Castle at the Four Corners?
a. Angkor Wat
b. Anasazi Indians
c. Mayan Indians
d. Egyptians
B
All planetary orbits are elliptical in shape is represented with which law?
a. Newton’s 1st Law
b. Newton's 3rd Law
c. Kepler's 1st Law
d. Kepler’s 2nd Law
C
What is the mass of a falling rock if it produces a force of 10 N? Use the following value for gravity: g=10 m/s2.
a. 1000.0 g
b. 10.0 g
c. 100.0 g
d. 1.0 g
D