4th Oral Test- Grade 10

Which of the following is not explained by the plate tectonic theory?

• The lithosphere is separated into huge segments called tectonic plates.

• The tectonic plates float on a partly molten layer of Earth called asthenosphere.

• Most winds are caused by convection which is due to unequal heating of Earth’s surface.

• Convection in the asthenosphere due to differences in the temperature sets the tectonic plates in motion.

Which of the following is not explained by the plate tectonics theory?

• waves

• mountains

• rift valley

• volcanoes

Mountain ranges form at plate boundaries. Which type of plate boundary creates the world’s largest mountain range?

• convergent

• divergent

• transform

• none of the above

Earth’s interior is always hot.

• True

• False

In an earthquake, the point underground is where the rocks first begin to move.

• epicenter

• focus

• fault

• plate tectonics

The epicenter of an earthquake is ­­­­­­­­___________.

• The point below the surface where rock begins to break and the first motion occurs

• The seismic station closest to the earthquake

• The place where the greatest damage occurs

• The point on the surface directly above the focus

Earth's solid, rocky surface is the___________.

• Mantle

• Core

• Crust

• Inner core

If the focus of an earthquake occurs beneath the sea floor, as the seismic waves travel through the ocean, they create a massive and destructive.

• Earthquake

• Volcanoes

• Mountain Ranges

• Tsunami

According to the plate tectonics theory the entire lithosphere of the earth is broken into numerous segments called _________.

• pangea

• P-waves

• S- waves

• plates

The land mass where all of the continents were once together in one large continent is called____.

• Pangaea

• Laurasia

• Eurasia

• Gondwana