Memorize these and you could recognize 22.8% of all Earth Science clues.
| # | Answer | Appearances | Sample Clue |
|---|---|---|---|
| 1 | the crust | 3 | The entire bottom of this rocky "skin" of the Earth is called the Mohorovicic discontinuity |
| 2 | tides | 3 | (Jimmy of the Clue Crew shows an astronomical animation on the monitor.) When the sun & moon align, their gravitational forces work together to produc... |
| 3 | the epicenter | 3 | The strongest shaking in an earthquake is usually felt at this point on the Earth's surface above the focus |
| 4 | the stratosphere | 2 | (Kelly of the Clue Crew shows a diagram on the monitor.) Passenger planes typically cruise at an altitude in the lower part of this atmospheric layer,... |
| 5 | the Mohs scale | 2 | The hardness of a mineral is often measured on this scale named for a German mineralogist |
| 6 | salinity | 2 | The temperature at which ocean water will freeze depends mainly on density & this other -ity |
| 7 | metamorphic | 2 | The 3 major rock classes are igneous, sedimentary & this, formed by changes to the other 2 types |
| 8 | erosion | 2 | The Grand Canyon is the result of this process by which the Earth's surface is worn away |
| 9 | the mantle | 2 | Lying just below the crust, this layer of the Earth's interior is solid rock 1800 miles thick |
| 10 | the hydrosphere | 2 | Collective term for the waters of the Earth as distinguished from the atmosphere & lithosphere |
| 11 | the core | 2 | Two regions, one liquid, one solid, are thought to make up this innermost part of the Earth |
| 12 | the confluence | 2 | From the Latin meaning "to flow together", it's the point at which two streams meet |
| 13 | relative humidity | 2 | The heat index combines current temperature & this, water vapor in the air as a percentage of its saturation point |