Which group contains only igneous rocks? 20 points
pumice and porphyry
slate and schist
sandstone and limestone
gold and copper
2. René has a mineral sample that she runs a nail over as a test. Which property is she testing?
20 points
hardness
luster
streak
texture
3. A rock forms under pressure at the bottom of a shallow sea. What kind(s) of rocks form?
5 points
igneous and sedimentary rocks
metamorphic and igneous rock
metamorphic rock
sedimentary rock
4. Sam gently strikes a mineral sample with a hammer. The sample breaks along a flat surface. Which physical property of minerals does this show?
20 points
cleavage
magnetism
luster
streak