| A | B |
|---|
| I provide support and nutrients for plants. I am the uppermost layer of soil. I contain large amounts of humus.What am I? | topsoil |
| I am the layer of soil hat is located underneath th topsoil. I have less humus than topsoil. What am I? | subsoil |
| I am the layer of solid rock beneaththe soi layers. I slowly break apart to produce soil. What am I? | bedrock |
| I provide nutrients for plants.I am the pieces of decayed plants and animals found in soil. What am I? | humus |
| I am the poess that produces soil. I am the breaking down of rock into smaller pieces, such as sand, silt and clay? What am I? | weathering |
| I am the carrying of weathered pieces of rock by wind, water and gravity. | erosion |
| I am present in humus. I am the materials that plans need to live and grow. What am I? | nutrients |
| I am stage in a cycle. I cause the moon to appear to have different shapes at different times. What am I? | phase |
| I am caused by the gravitational pull between Earth and the moon. I am the rise and fall of oceans waters. What am I? | tide |
| I am the force that attracts two objects. I keep objects on Earth from floating into space. What am I? | gravity |
| I am a pattern that repeats itself in a predictable sequence. What am I? | cycle |
| I am the movement of an object on its axis. Because the Earth does this type of movement, we have night and day. What am I? | rotation |
| I am the movement of one object around another oject. An example is the Earth's movement around the sun. What am I? | revolution |
| I am an imainary linethat is drawn from the North Pole to the South Pole through te center of the Earth. What am I? | axis |
