Dynamic Earth

2. Cooling lava can form large _____ plains like those in Victoria's western district.
3. Volcanoes that have not erupted for over 20 years are referred to as _________ volcanoes.
6. The two types of crusts on earth are continental and ________.
8. The water on the surface of the earth is the _________ and is part of the structure of the earth.
9. An earthquake occurs when parts of the Earth’s ______ move past each other.
12. Mid-ocean ridges form when magma spews up to the surface between plates that are ___________.
13. The _______of an earthquake is the place in the earth where the fault movement took place.
14. The ______ are made up of continental crust, which is between 30 km and 70 km thick.
15. The highest mountain ranges the __________ are formed because two contintental crusts meet.

1. Molten rock that has not reached the surface of the earth is called ____.
4. The strength of the shock waves is measured on the ______scale.
5. Oceanic crust is much ___________than continental crust and has an average thickness of about 6 km.
7. Ring of fire is where __________crusts and oceanic crusts meet.
10. Earthquakes occurring under water can result in __________ which are a series of ocean waves caused by the sudden displacement of a large amount of water.
11. Slip ________ is a break in the rocks that make up the Earth's crust, along which rocks on either side have moved past each other.