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LET'S EXPLORE ROCKY MIXTURES Science Skill: Observing Time Frame: 15 to 20 minutes You Will Need: - rocks from different places - magnifying glass What to Do: 1 1 1 1 1 1 1 ⚫ hammer • piece of cloth 1 1 1. Collect some rocks from different places or study the rocks that your teacher will provide. 2. Examine the surface of the rocks. Try to see some spots and lines of different colors . Such patterns indicate that different substances make up these rocks. 3. Wrap a rock with the cloth. 4. Using a hammer, carefully pound the rock to split it or at least make it chip off. Observe th newly exposed surface regarding its color, luster, and hardness. Questions: What type of mixture are these rocks? Why do you say so?
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