Third Grade - Rocks and Minerals Crossword Puzzle

QUESTIONS LIST: hardness : how easily a mineral can be scratched, streak : the color of the powder left when a mineral is rubbed on a white tile, magma : melted rock deep inside the earth, luster : how shiny or dull a mineral is, metamorphic : rock that has been changed by heating and squeezing, minerals : solid nonliving substances found in nature, rock : nonliving material made of one or more minerals, sedimentary : rock that forms from layers of sediment that pile up, sediment : tiny bits of weathered rock or once living animals or plants, lava : melted rock that flows onto earth's surface, igneous : rock that forms when melted rock cools and hardens, geologist : person who studies rocks and minerals, color : most minerals are only one _ , geology : study of rocks and minerals