Natural sciences
The earth and beyond
Rock formations
Educator section
Memorandum
- Find out more:
Uses for slate
- Garden paths
- Paving tiles, etc.
Uses for marble
- Kitchen surfaces
- Gravestones, etc.
Assignment 6:
| Sedimentary | Metamorphic |
| Newly formed from rocks or the remains of animals that died. | Pre-existing rock that changes due to pressure or heat. |
| Softer | Harder |
Leaner section
Content
Activity: to discuss metamorphic rocks as a type of rock formation [lo 2.1]
- Metamorphic rocks are formed when existing rocks are changed through great pressure or heat. This metamorphosis or change takes place over a VERY long period of time because the rock has to be at a particular depth below the earth surface where it is exposed to the extreme heat and pressure that is required. After it is formed, it may easily take 100 million years for the earth surface to be changed sufficiently by erosion for these rock formations to be exposed.
- Slate is formed when very high pressure is exerted on existing rock.
- Marble is formed when extreme heat is exerted on existing rock.
ASSIGNMENT 6
- Explain how metamorphic rock differs from sedimentary of rock formations.
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| Educator’s AssessmentCRITERIA | 1. | 2. | 3. | 4. |
| 1. Are the three types of rock dealt with adequately? | ||||
| 2. Have the most important aspects been mentioned? | ||||
| 3. Was any source besides the module consulted? | ||||
| 4. Does the learner exhibit insight with regard to rock formations? |
Assessment
Learning Outcome 2: The learner will know and be able to interpret and apply scientific, technological and environmental knowledge.
Assessment Standard 2.1: We know this when the learner recalls meaningful information.