Term
|
Definition
| A particle of space debris |
|
|
Term
|
Definition
| A particle of space debris that entered Earth's atmosphere |
|
|
Term
| A common name for meteors is ... |
|
Definition
|
|
Term
|
Definition
| These are when many flashes are seen as the Earth moves through a stream of space debris |
|
|
Term
| Space debris is caused by ... |
|
Definition
| ... scattered pieces remaining from objects such as comets. |
|
|
Term
| The vast majority of meteors are ... (choose one... small/large). |
|
Definition
|
|
Term
| What happens to most meteors? |
|
Definition
| Most burn up before causing impact on Earth. |
|
|
Term
| What causes meteors to not survive their fall toward Earth? |
|
Definition
| The Earth's atmosphere often completely vaporizes the meteors before they can impact. |
|
|
Term
| What are some characteristics of meteors that may cause a crater? |
|
Definition
| They must be large enough and traveling fast enough to impact the Earth. |
|
|
Term
| What does, "generate a crater" mean? |
|
Definition
| This means to be able to cause a crater to form. |
|
|
Term
| Occasionally meteors can have catastrophic effects. What does that mean? |
|
Definition
| It means that on rare occasions meteors can cause disastrous effects. |
|
|
Term
| What are the types of gases that were given off from volcanoes in Earth's early atmosphere? |
|
Definition
| hydrogen, carbon dioxide, nitrogen, and water vapor |
|
|
Term
| Hydrogen is such a small molecule that it may... |
|
Definition
| ...escape to space from Earth's atmosphere. |
|
|
Term
| Earth's early atmosphere contained (choose ...little/a lot of) oxygen. |
|
Definition
|
|
Term
| Where did much of the ocean's water originate from during Earth's early history? |
|
Definition
| Ocean water came from water vapor gases collected from erupting volcanoes. |
|
|
Term
| The Earth's early atmosphere was (choose ... the same/different) from our current atmosphere. |
|
Definition
|
|
Term
|
Definition
| This is when pressure is released as magma comes to the surface such as at volcanoes and gases escape to the atmosphere. |
|
|
Term
| What happened to organisms as the Earth's atmosphere built up oxygen? |
|
Definition
| The original life-forms could no longer live on Earth's surface. |
|
|
Term
| Why did other organisms such as animals including humans evolve? |
|
Definition
| This was because oxygen built up in the Earth's atmosphere. |
|
|
Term
| What does oxygen in the upper atmosphere do for Earth? |
|
Definition
| It forms into the ozone layer that protects Earth's land-dwellers from ultraviolet radiation. |
|
|
Term
| Complete this statement, "The bigger the meteor, the _________ the crater." |
|
Definition
|
|
Term
| Complete this statement, "The faster the meteor, the _________ the crater." |
|
Definition
|
|
Term
| What can be said about the age of rock layers? |
|
Definition
| The older rock layers are nearer the bottom and the newer rock layers are nearer the top. |
|
|
Term
|
Definition
| This is when we figure out how old something is in relation to rock layers. |
|
|
