Rocks solidified from molten material below ground are classified as ______________ igneous rocks
a. extrusive
b. intrusive
c. superior
d. inferior
b
You might also like to view...
An electron in an atom can go from a lower energy level to a higher energy level if the atom
A) emits a photon of a specific wavelength. B) absorbs a photon of a specific wavelength. C) emits several photons of a specific wavelength. D) emits a photon of any wavelength. E) absorbs a photon of any wavelength.
Two very large parallel metal plates, separated by 0.20 m, are connected across a 12-V source of potential. An electron is released from rest at a location 0.10 m from the negative plate
When the electron arrives at a distance 0.050 m from the positive plate, how much kinetic energy has the electron gained? (e = 1.60 × 10-19 C) A) 7.2 × 10-19 J B) 2.4 × 10-19 J C) 9.6 × 10-19 J D) 4.8 × 10-19 J
Light passes from medium one 
to medium two 
If v1< v2 then at the boundary
A. f increases 
decreases.
B. f does not change, 
increases.
C. f decreases, 
increases.
D. f does not change, 
decreases.
An astronaut leaves Earth in a spaceship at a speed of 0.960c relative to an observer on Earth. The astronaut's destination is a star system 14.4 light-years away. (One light-year is the distance light travels in one year.)
According to the astronaut, how long does the trip take? A) 14.4 y B) 22.7 y C) 9.34 y D) 15.0 y E) 4.20 y