Movie worksheet

We know that sound waves gain ___________ and lose ___________ as they travel through more dense materials.

• mass and volume

• gravity and volume

• weigth and frequency

1) When Dr. Keyes is lecturing his class, there is a drawing of the Earth’s structure behind him on the blackboard, but one of Earth’s layers is unlabeled. What is the name of this layer?

• Inner core

• Outer core

• Mantle

• Crust

What drives the EM (electro-magnetic) field?

• The rotation of the liquid outer core

• The rotation of the Earth around the Sun

• The rotation of the solid inner core

Major Childs (Rebecca) states, “We’re about to make the transition into the mantle.” What is the scientific term given to the transition between the crust and mantle? How many kilometers (give a range) below the continents does it occur?

• The Moho. 25-60 km

• The Core-Mantle Boundary. 2891 km

• The Moho. 100-200 km

• The Core-Mantle Boundary 25-60 km

Why is the EM (electro-magnetic) field so important to life on Earth?

• It provides the north and south poles

• It regulates the rotation speed of the Earth

• It protects the planet from cosmic radiation

• Both A and C

Dr. Keyes tells the General that the core is the size of Mars. The diameter of Mars is 6,794 km. Is he correct?

• True

• False

Name three occurrences early in the movie where the effects of the Earth’s magnetic field supposedly were revealed.

• People with pacemakers dying, buildings collapsing, crops dying

• People with pacemakers dying, the birds crashing into building and cars, space shuttle landing off course

• Planes crashing, temperatures rapidly dropping, and the space shuttle landing off course

• There was no indication that anything was wrong with the Earth’s magnetic field

What are the colored lights in the sky next to the Washington monument called?

• Seismic waves

• Southern Lights

• Aurora (borealis)

• Magnetic poles

Dr. Keyes description of the planet using the peach is an exact representation of the Earth’s structure and scale?

• True

• False

According to the film, what will happen when the EM (electro-magnetic) field collapses?

• Solar radiation will “freeze” the planet

• The planet will stop rotating

• Nothing will happen

• Solar radiation will “cook” the planet