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science quiz 1.1-1.3
Earths Interoir, Convertion currents and the mantle, Drifting Continets
| Question | Answer |
|---|---|
| Geologists | Scientists who study planet Earth |
| Geology | The study of planet Earth |
| What are the two types of surface changes? | 1. constructive forces 2. destructive forces |
| Describe Constructive forces. | Constructive forces shape the surface by building up mountains and landmasses. |
| Describe Destructive forces. | A force that slowly wears away features of the Earth's surface. |
| What kind of indirect evidence do geologists use to study the structure of Earth? | They receive evidence from seismic waves. For example: When an earthquake occurs, geologists record the speed of the seismic waves to study how the waves travel through the Earth. |
| What are the effects of Temperature and Pressure as you travel through the layers of the Earth? | Temperature: gets hotter when you dig further down (20 meters) Pressure(force pushing on a surface area): builds up when you go further down. |
| What are the 3 main layers that make up the Earth's interior? | Crust, Mantle, and the Core. |
| Explain how Earth's magnetic field occurs. | The current of the liquid in the outer core forces the inner core to spin. This movement creates Earth's magnetic field. |
| What is Heat Transfer? | The movement of heat from a warmer object to a cooler object. |
| Describe Radiation. | Radiation is the heat transfer through empty space. No direct contact.... example: someone tanning at the beach. |
| Describe Conduction. | Conduction is the heat transfer when a hot object builds up with particles of matter. Example: someone puts their hand on a bowl of oatmeal. |
| Describe Convection. | Convection is a heat transfer involving the movement of fluids, liquids, and gases. Example: a radiator... hot air rises |
| How is heat transfer by convection caused? | The differences of temperature and density. |
| What is convection current? | Convection Current is the flow that transfers heat within a fluid. |
| Who was the German scientist who formed a hypothesis that Earth's continents was once joined together?` | Alfred Wegener |
| What does Pangaea mean? | "all lands" |
| What is the continental drift? | Wegener's idea that the continents which were once joined together slowly began to "drift" apart. |
| What types of evidence proved that the continents were once joined together? | 1. Fossils 2. landforms 3. climate changes |
| What is a fossil? | a fossil is any trace of an ancient organism that has been preserved in a rock. |
| Why was Alfred Wegener's theory rejected by most scientists of his day? | Wegner could not give enough information to explain the force that pushed or pulled the continents apart. |
Created by:
hoseman
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