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Vocab #4
Weekly 8th grade vocab
| Question | Answer |
|---|---|
| Magnitude | the strength of a force or object |
| Balanced forces | forces that cause no change in the motion of an object |
| Unbalanced forces | forces that always cause the motion of an object to change its speed and/or direction |
| Medium | a material thru which waves can travel |
| Crest | highest point of a wave |
| Trough | lowest point of a wave |
| Metamorphic | rocks that are changed into different kinds of rocks by heat and/or pressure |
| Igneous | rocks that form when magma cools and hardens |
| Magma | molten (hot liquid) rock inside the earth |
| Lava | magma that reaches the earth |