The theory that the Earth's crust and part of the upper mantle are broken into sections that move on a fluid layer of the mantle is called ...

A. Continental Drift

B. Wegener's Theory

C. Sea Floor Spreading

D. Plate Tectonics

Plastic foam is about 0.10 times as dense as water. What weight of bricks could you stack on a 1m x 1m x 0.10m slab of foam, so that the slab of foam floats in the water, leaving the bricks dry?

Which type of simple machine is a ramp? a wedge a pulley and inclined plane a lever

What is a transfer a wave

Name of the anatomy text written by a physician from bologna

What is the best way to get the right amount of vitamins needed from proper growth and development?

Differeniate between thermal energy and heat

The term that describes the time when the sun's are directly over the equator is:

A submarine can detect an approaching enemy submarine using sonar. If a stationary submerged submarine emits a 100kHz tone and receives a tone Doppler shifted by 200Hz, calculate the speed of the enemy submarine if the speed of sound in salt water

The planet Krypton has a mass of 7.6 * 1023 kg and radius of 1.7 * 106 m. What is the acceleration of an object in free fall near the surface of Krypton? The gravitational constant is 6.6726 * 10-11 N · m2 / kg2. Answer in units of m/s 2.

An input force of 50. newtons is applied through a distance of 10. meters to a machine with a mechanical advantage of 3.