1) What covers most of the earth's surface? a) land b) islands c) water d) mountains 2) Which continent is an island and a continent? a) Austria b) Australia c) North America d) Africa 3) What are the 3 layers of the earth? a) crust, mantle, core b) core, mantle, outer layer c) inner layer, mantle, core d) crust, mantle, continent 4) What is the melted rock that comes out of a volcano called? a) Rock b) Weathering c) Water d) Lava 5) Which layer of the earth is made of melted rock? a) Core b) Crust c) Mantle 6) Geologists can learn about the earth's ________ when they dig holes and study rocks. a) inner core b) crust c) mantle d) outer layer 7) What are the largest areas of land on the earth's surface called? a) continents b) mountains c) canyons d) islands 8) What is a canyon? a) a narrow passage with narrow sides and no river flowing through it b) a deep narrow passage with steep sides and a river flowing through it c) a piece of land that is surrounded by water d) water that is surrounded by land 9) Which continent is North America? a) 1 b) 5 c) 4 d) 3 10) Which continent is Asia? a) 1 b) 5 c) 4 d) 3 11) Which continent is Europe? a) 1 b) 5 c) 4 d) 3 12) What is the breaking down of rock into smaller pieces by wind, water, ice, or plants called? a) erosion b) weathering c) an earthquake  d) a volcano 13) What happens when large areas of the earth's surface shake and move? a) erosion b) weathering c) an earthquake  d) a volcano 14) What happens when the earth's crust opens and lava flows out? a) erosion b) weathering c) an earthquake  d) a volcano 15) What is the moving of rocks, soil, or sand on the earth's surface? a) erosion b) weathering c) an earthquake  d) a volcano 16) True or false: The largest areas of land on the earth's surface are continents. a) True b) False 17) True or false: Land covers most of the earth's surface. a) True b) False 18) True or false: The layer of the earth that is made of melted rock is the core.  a) True b) False 19) True or false: Think of the play-doh model that we made. The layers of the earth in order are 1. Crust (Green), 2. Mantle (Yellow) and 3. Core (Red) a) True b) False 20) Why can scientists only infer (predict) what layers are inside the earth? a) They don't know how to look for them. b) They cannot observe them. c) They don't have the tools to look underground.

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