It takes 687 days for Mars to orbit the Sun, which is 1.88 Earth years. 1.88 x 1.88 = 3.5378 which has a cube root of 1.5237 meaning that on average Mars is 1.5237 times the Earth's average distance from the Sun.
boulder definition: The definition of a boulder is a large, smooth rock. (noun) When you build a retaining wall and use a large rock in the wall, this rock is an example of a boulder. A rock that has been detached from the earth by erosion or for ot...
sand. 1. Small, often rounded grains or particles of disintegrated rock, larger than particles of silt. Although sand often consists of quartz, it can consist of any other mineral or rock fragment as well.Coral sand, for example, consists of limestone fragments. 2.. sand-a loose material consisting of grains of rock or coral. beach-an area of sand sloping down to the water of a sea or lake. quicksand-a pit filled with loose wet sand into which objects are sucked down.