C) Tree rings trap gas bubbles that can be used to interpret atmospheric conditions
D) Tree rings can measure past CO2 concentrations
Which of the following processes created the lunar maria?
A) Solar winds eroded wide, shallow basins, which were later filled with ejecta.
B) Large impact craters were then filled with basaltic lava flows.
C) Liquid water flowed across the landscape, which later froze.
D) Rocks exposed to the solar winds oxidized.
Match the collection of rocks below into the three categories of rocks.
1. Igneous rocks
2. Sedimentary rocks
3. Metamorphic rocks
A) Slate, schist, quartzite, phyllite
B) Granite, gabbro, rhyolite, basalt
C) Limestone, conglomerate, arkose, dolomite