Convection in Earth's mantle is attributed to

A) sinking cold oceanic crust.
B) gravity and heat flow.
C) conduction of heat from Earth's core.
D) temperature differences between continental and oceanic crust.


Answer: B

Physics & Space Science

You might also like to view...

A 1.0-?F and a 2.0-?F capacitor are connected in series across a 3.0-V voltage source

(a) What is the charge on the 1.0-?F capacitor? (b) What is the voltage across the 2.0-?F capacitor?

Physics & Space Science

The Rydberg equation is used to

a.determine the ratio of the electron charge to its mass b. calculate the wavelengths of different spectral lines of hydrogen c. measure the mass of the hydrogen atom d. calculate the wavelengths of different transitions in energy level of electrons in helium

Physics & Space Science

A 3 solar mass main sequence star is at a larger distance than a 0.4 solar mass main sequence star. Which star appears brighter?

A. The 3 solar mass main sequence star. B. We cannot tell with the information given. C. The 0.4 solar mass main sequence star. D. The stars are approximately the same brightness. E. It depends on the phase of the Moon.

Physics & Space Science

?

Instructions: On occasion, the notation will be a shorthand notation for . Exhibit 3-1 The three forces shown act on a particle. Use this exhibit to answer the following question(s). Refer to Exhibit 3-1. What is the direction of the resultant of these three forces? A. 35° B. 45° C. 65° D. 55° E. 85°

Physics & Space Science