Amy demonstrated the formation of a type of rock. she kept a bowl of hot water in the freezer. the water solidified to form ice.
the formation of which type of rock did amy demonstrate?
a) eroded rock
b) igneous rock
c) metamorphic rock
d) sedimentary rock

Scientists think that convection currents flow in earth’s a. continents. b. mantle. c. lithosphere. d. inner core.

Determine which of the two measurements in each set is lesser.10°f or 20°ca. 10-fb. 20°c

Some gamma ray bursts are hypothesized to come from mergers of neutron stars or black holes. if this hypothesis is correct, what else should we in principle be able to detect from such mergers? a. gravitiational waves b. x-ray bursts c. significant disruption of gas thousands of light-years away in the surrounding galaxy d. an "afterglow" of bright visible light, lasting for weeks