| hint | | extra |
|---|
| Furthest planet from the Sun | |
| Gas in the stratosphere that absorbs UV rays | |
| Allows water to flow through it | |
| Moon phase during moderate (neap) tides | |
| Heat transfer through empty space | |
| Scratched and grooves in the bedrock created by a glacier | |
| The daily rise and fall of ocean waters due to the gravitational pull of the moon (and to a lesser degree, the sun). | |
| A gap in the rock record due to weathering and erosion | |
| A small air pocket or cavity formed in volcanic rock during solidification | |
| When the lit portion of the moon is getting larger | |
| Igneous rock that forms from quickly cooling lava, above Earth's surface | |
| Hot spot in Wyoming causing more geysers than anywhere else in the world | |
| The area directly below the water table and above the impermeable bedrock | |
Periodic Table
Planets from the Sun
Digits of Pi
