Earth's Surface and Plate Tectonics

What percentage of Earth's surface is water?

• Less than 30%

• Around 50%

• More than 70%

• Exactly 100%

What is the main composition of Earth's water?

• Freshwater

• Salty water

• Mineral water

• Carbonated water

What is the atmosphere?

• A layer of rocks

• A layer of gases

• A layer of ice

• A layer of fire

What does the atmosphere provide to people?

• Oxygen

• Carbon dioxide

• Nitrogen

• Hydrogen

What does the atmosphere provide to plants?

• Oxygen

• Carbon dioxide

• Nitrogen

• Hydrogen

What are mountains?

• Areas at least 2,000 ft below sea level

• Areas at least 2,000 ft above sea level

• Areas at least 1,000 ft above sea level

• Areas with extreme weather

What are hills?

• Areas below sea level

• Areas above sea level

• Areas with no vegetation

• Areas with extreme weather

What is a plateau?

• A large, mostly flat area at a high elevation

• A small, steep area at a high elevation

• A large, mostly flat area at a low elevation

• A small, steep area at a low elevation

What are plains?

• Areas below sea level

• Areas above sea level

• Areas with no vegetation

• Mostly flat land at a lower elevation

What are the huge blocks of Earth's crust called?

• Plates

• Continents

• Mountains

• Volcanoes