Harder materials can scratch softer materials. Gypsum, Calcite, Feldspar and Topaz are 4 types of rocks with different hardness.
The ''flowline'' shown here helps us identify which rocks are harder than others. Based on the flowline, which of the following can definitely be scratched by fingernail?
FlowLine Chart:
Attachments:
Answers
Answered by
0
Answer:
what is environment?
our surroundings
Answered by
0
Answer: Gypsum
Explanation: According to the flowline, A gypsum can be scratched by a fingernail. The flowline specifies that if a rock cannot be scratched by a copper coin (Step 1), it will go to Step 2 to determine if it can be scratched by a fingernail. If a rock can be scratched by a fingernail (Step 2), the flowline stops. In this case, the rock stops at Step 3, which indicates that Gypsum can be scratched by a fingernail. Therefore, the answer is Gypsum.
Similar questions