Plate Tectonics: P9: Homework

Read each sentence and answer appropriately. Type your answers in the comments section. Make sure to number your answers correctly. 

1. Volcanoes occur where...

    A. there is lava.

    B. there is a fault line.

    C. where plates pull apart and collide.

2. Plates form a volcano when the they are divergent plates under the ocean. It reduces the pressure and lets some of the Mantle rock melt and come up. It leads to...

     A. volcanic eruption.

     B. a volcanic island.

     C. an earthquake.

3. A volcano is created by convergent plates when they collide and a plate is pushed under they other and is heated by the friction and pressure.

     True   or   False

4. ____ is melted rock.

     A. mantle

     B. lava

     C. convergent

5. If a volcano is very active, it will create a ____ with the lava.

     A. island

     B. creator

     C. earthquake

6. _____ is made when a plate is shoved under another.

     A. mountain

     B. trench

     C. river

7. Volcanoes also occur when plate boundaries move over ____.

     A. hot spots

     B. the ocean

     C. fault lines

8. Hawaii was formed by hot spots.

     True   or   False

9. A new Hawaiian island, named _____, is forming 20 miles from the big island.

     A. Loihi

     B. Mikki

     C. Siddica