Multiple Choice 1 point Which of the following are differences between an eruption column and pyroclastic flow? Tephra in an eruption column stays hotter until it reaches the ground. A pyroclastic flow forms when the gas flux cannot support the column. A pyroclastic flow rises higher into the atmosphere than an eruption column. Damage from an eruption column is more restricted than a pyroclastic flow.

Which location has the trail Owl Canyon? Lake Mead Red Rock Mount Charleston

Which of these can determine the size of grains in igneous rocks? Amount of rare minerals Distance from a plate boundary Size of the volcano Cooling rate of molten rock

Which two of the following best describe what events led to ore deposits in the Earth. A Hydrothermal activities B Rain shadow effects Solar eruptions D Tidal waves E Volcanoes

Largest East Asian country by land area? A) Mongolia B) Japan C) China D) South Korea

The majority of Egypt's population is clustered around what geographical feature? The Gulf of Suez The Suez Canal The Western Desert The Nile River

Climatic regions are classified according to temperature and __ Which phrase best completes the sentence? altitude ocean currents distance from bodies of water precipitation

Which best describes El Salvador? (1 point) small mountainous small, Caribbean coastline large European population largest of the Central American countries

Where does the Mid -Atlantic Ridge rise above sea level? a. The Hawaiian Islands b. Iceland c. South Africa d. Coastal Brazil

Which of the following types of volcanoes is MOST likely to form within another, larger volcano? a. Shield volcanoes b. Cinder cones c. Stratovolcanoes d. Lava domes

Which location has the trail Mary Jane Falls? Red Rock Lake Mead Mount Charleston