| A | B |
|---|
| A solar eclipse happens when | the moon is between the earth and the sun and it blocks out the sun |
| A lunar eclipse happens when | the earth is between the sun and the moon and the earths shadow hits the moon |
| We know outer core is liquid because | s waves cant go through it |
| The area drained by a river and its tributaries is a | watershed |
| The closer and larger two objects are | the greater the force of gravity |
| Plate tectonics says | the earths lithosphere is divided into pieces called plates that move |
| the 3 types of plate boundaries are | divergent,convergent, and transform |
| subduction is when | one plate sinks under another forming a trench |
| Weathering occurs when rocks are exposed to | the hydrosphere,biosphere and atmosphere |
| Moist and warm climates favor | chemical weathering |
| Moist and cold climates favor | physical weathering |
| When in doubt | use the reference tables |
| As particle size decreases | surface area increases and the rate of weathering increases |
| Soils develop as a result of | weathering and biological activity |
| The primary force that drives the agents of erosion is | gravity |
