Igneous rock is formed from
A) crystallization of molten magma.
B) high temperatures and pressures.
C) solidified lava beneath the Earth's surface.
D) any of these
Answer: A
You might also like to view...
No visible light can escape a black hole, but things such as gamma rays, X-rays, and neutrinos can
Indicate whether the statement is true or false
A helium atom with only one neutron in its nucleus is called ________.
A. an ion B. deuterium C. an isotope D. a neutrino
The circuit below contains 4 100-W light bulbs. The emf is 110 V. Which light bulb(s) is(are) brightest?
A. A B. B C. C D. D E. C and D
The pupil of a person's eye changes from a diameter of 3.5 mm to 1.5 mm as the illumination is increased. By what factor does the minimum angle of resolution change?
A) 0.43 B) 2.3 C) 0.65 D) 2.0