Metamorphic Rocks Concept Map Worksheet

Let’s solve this step by step.

First, look at the concept map. The top box (1) is the main category — everything below it branches from it. Since the worksheet is titled “Metamorphic Rocks” and all terms listed are types or examples of metamorphic rocks, box 1 must be metamorphic rocks.

Next, box 1 says “can be classified as” leading to boxes 2 and 3. From the word bank, we have two classifications: foliated rocks and nonfoliated rocks. So boxes 2 and 3 are those two — but which is which?

Look under box 2: it says “two examples are” → one is already filled in: slate. Slate is a foliated rock. So box 2 must be foliated rocks.

That means box 3 is nonfoliated rocks.

Now, under box 2 (foliated rocks), we have two examples: slate and box 4. From the word bank, other foliated rocks listed are gneiss and schist — but schist isn’t in the word bank. Wait — let’s check the word bank again:

Word bank:
- metamorphic rocks
- marble
- gneiss
- foliated rocks
- quartzite
- shale
- nonfoliated rocks
- sandstone
- granite

Wait — shale and sandstone and granite are NOT metamorphic! They’re sedimentary or igneous. But they might be parent rocks.

Actually, looking again — the word bank includes some rocks that are NOT metamorphic — like shale, sandstone, granite — because they are the *original* rocks that turn INTO metamorphic rocks.

So for box 4: another example of foliated rock besides slate? From the list, gneiss is foliated. So box 4 = gneiss.

Under box 3 (nonfoliated rocks), two examples: boxes 5 and 6. From word bank, nonfoliated metamorphic rocks include marble and quartzite. So boxes 5 and 6 are those two — order doesn’t matter yet.

Now, each of these forms from a parent rock.

Slate (under box 2) forms from... what? Slate forms from shale. So box 7 = shale.

Gneiss (box 4) forms from... typically granite or other igneous/sedimentary rocks under high heat/pressure. In the word bank, granite is listed — so box 8 = granite.

Box 5: if it’s marble, then it forms from limestone — but wait, box 6 already has “forms from limestone”. Let’s see:

Box 6 says “forms from limestone” → so box 6 must be marble, since marble forms from limestone.

Then box 5 must be quartzite, which forms from sandstone. So box 9 = sandstone.

Let’s double-check:

Box 5: quartzite → forms from sandstone → box 9 = sandstone ✔️
Box 6: marble → forms from limestone ✔️ (already given)

Now, let’s fill in the concept map numbers:

1. metamorphic rocks
2. foliated rocks
3. nonfoliated rocks
4. gneiss
5. quartzite
6. marble
7. shale
8. granite
9. sandstone

Now, the true/false questions:

10. Metamorphic rocks form only from igneous rocks. → FALSE. They can form from sedimentary (like shale → slate) or igneous (granite → gneiss). So answer: F

11. An igneous rock like granite can be formed into a metamorphic rock like gneiss. → TRUE. Granite under heat/pressure becomes gneiss. Answer: T

12. Heat and pressure have no effect on rocks. → FALSE. That’s how metamorphic rocks form! Answer: F

13. One type of rock, such as shale, can change into several different kinds of metamorphic rock. → TRUE. Shale can become slate, phyllite, schist, gneiss depending on intensity. Answer: T

Final Answer:

Concept Map:
1. metamorphic rocks
2. foliated rocks
3. nonfoliated rocks
4. gneiss
5. quartzite
6. marble
7. shale
8. granite
9. sandstone

True/False:
10. F
11. T
12. F
13. T