How to Play
• Answer the Science General Knowledge questions, then find the words in the grid
• Words appear horizontally, vertically, diagonally and backwards. Some words may overlap.
Quiz Questions
1. Seismologists believe that these are caused when the crustal plates, pushing against each other become stuck, the suddenly break free, and slide against one another for several seconds.
2. Rafts that float on the soft rock of the upper mantle.
3. Diamonds are mined from mineral deposits, which are usually found in deep, tube-like formations, known as diamond…….
4. These types of volcanic eruptions are named after a very active volcano in Italy, which erupts an average of once every 20 minutes.
5. One semiprecious stone, commonly confused with ruby is red …..
6. Tephra fragments, smaller than 2 1/2 inches, but larger than ash, are what?
7. A fossil fuel, that may have been formed from the remains of once living creatures, the word coming from two words that mean rock oil.
8. A volcano is said to do this when the trapped gases blast an opening, through the Earth’s surface, allowing the hot gases and molten rock to escape.
9. A type of volcano that forms, when large amounts of runny lava gradually builds up a dome-shaped mountain.
10. These belts are the regions of the Earth, located along plate boundaries, where most earthquakes occur.
11. Melted rock is called this.
12. An unfoliated metamorphic rock, that was once limestone, but was hardened, by extreme heat, and pressure, within the Earth.
13. A yellowish coloured precious metal.
14. Petroleum goes through a process call fractional distillation to separate the hydrocarbons, into different groups, and one of these used to make paint thinner is ……….
15. A rock mineral, copper is contained in an alloy, with tin, to make this metal.
16. After the eruption of volcanoes, the empty magma chambers, if close to the surface, may cave-in forming depressions known as these.
17. The breaks that appear in the rocks, at the boundaries, between two moving masses of rocks.
18. The Earth’s magnetic ones, do not remain in fixed locations, but wander over a small region of the Earth’s surface.
19. This rock is formed, from mud or clay, that consists of much smaler particles than sand, and is often found in layers of sandstone, or limestone.
20. As lava cools, the escaping gas leaves behind hollow spaces in the hardening rock, making this rock, foam-like in apprearance.
21. A typical shield volcano, has a large one of these, or depression at its top.
22. A volcano, which erupted many years ago, and is now inactive, but which may erupt again, is classified as this.
23. A weak earthquake, which may be felt as a slight vibration of the ground, accompanied by a low rumbling sound.
24. A smaller earthquake or tremor, which may occur periodically, some time after a major earthquake is an after ……..
25. A stream of harmful particles, that flow constantly, from the surface of the Sun, are called …….wind.
26. Seismic magnitude is measured on the Richter………
27. Tephra, more than 2 1/2 inches across, is known as a volcanic ……., if solid rock.
28. We get halite, or rock salt from one, and it is refined to be used in making chemicals, tanning leather, flavouring food, and salting roads in winter.
29. Molten rock after it reaches the Earth’s surface.
30. Tephra more than 2 1/2 inces across, is known as a volcanic ……., if molten lava.
31. The part of the volcano that builds up around the vent.
• Find the answers to the quiz hidden in the grid below.