How old is Earth and how were we able to figure this out?
4.6 Billion years old
What planet is it from the sun?
What is relative dating?
placing events in their proper sequential order without knowing their age in years
What is the law of superposition?
Law states that the youngest layers are on top and the oldest layer is on the bottom
What is the hydrosphere?
Dynamic mass of water that is continually on the move undergoing the water cycle of evaporation to precipitation to the ocean.
what is the atmosphere?
Live - giving gaseous envelope that surrounds Earth. Half of the atmosphere lies below an altitude of 3.5 miles and 90% occurs within 10 miles of Earth's surface. The atmosphere protects us from sun's intense energy and dangerous UV radiation