Metamorphic rocks Lesson Objectives Explain how metamorphic rocks

Metamorphic rocks Lesson Objectives Explain how metamorphic rocks are formed. 11 January 2022 Entry: in silence: 1. Format your desk. 2. Write and underline the date and title. 3. Write the LO: objective. DNA: True or false? Copy the true and correct the false. 1. Igneous rocks are made from mineral crystals. 2. Igneous rocks do not react with acid. 3. Intrusive igneous rocks are formed when the magma flows onto the Earth’s surface as lava or explodes violently. Growing Together - Reaching Higher

Lesson Objectives Explain how metamorphic rocks are formed. Self Assess 1. Igneous rocks are made from mineral crystals. True. 2. Igneous rocks do not react with acid. True. 3. Intrusive igneous rocks are formed when the magma flows onto the Earth’s surface as lava or explodes violently. False – Intrusive igneous rocks are formed when magma is forced into older rocks at depths within the Earth’s crust, which then slowly solidifies below the Earth’s surface so that large crystals form. Growing Together - Reaching Higher

Lesson Objectives By the time you leave my room today…. . Explain how metamorphic rocks are formed. 1. Name some types of metamorphic rocks. 2. Describe the properties of metamorphic rocks. 3. Explain how metamorphic rocks are formed. Growing Together - Reaching Higher

Lesson Objectives Explain how metamorphic rocks are formed. Exposition: • Name some types of metamorphic rocks. • Marble and slate are examples of metamorphic rocks. • Describe the properties of metamorphic rock. • • • Properties of metamorphic rocks include: layers of crystals smooth dull very hard some react with acid • Marble is formed from limestone and contains tiny interlocking grains. The layers in slate, formed from shale, are arranged in layers. This makes slate useful for making roof tiles because it can be split into separate flat sheets • Explain how metamorphic rocks are formed. • Metamorphic rocks are formed from other rocks that are changed because of heat or pressure. They are not made from molten rock – rocks that do melt form igneous rocks instead. Earth movements can cause rocks to be deeply buried or squeezed. As a result, the rocks are heated and put under great pressure. The rocks are heated between 150° and 795°C which has enough energy to break and reform the chemical compositions of the rocks so changing the rocks crystal structure. They do not melt, but the minerals they contain are changed chemically, forming metamorphic rocks. • Growing Together - Reaching Higher

Lesson Objectives Explain how metamorphic rocks are formed. Metamorphic rocks Marble (Metamorphic) Slate (Metamorphic) Growing Together - Reaching Higher

Lesson Objectives Explain how metamorphic rocks are formed. Properties of metamorphic rocks • • • layers of crystals smooth dull very hard some react with acid Growing Together - Reaching Higher

Lesson Objectives How are metamorphic rocks formed? Explain how metamorphic rocks are formed. Growing Together - Reaching Higher

Lesson Objectives Explain how metamorphic rocks are formed. Do Not Disturb Describe how metamorphic rocks are formed. Growing Together - Reaching Higher

Lesson Objectives Explain how metamorphic rocks are formed. WGLL Metamorphic rocks are the rocks formed from other rocks, sedimentary or igneous, that have undergone changes as a result of extreme pressure and heat. This alters the mineral composition and texture of the preexisting rocks to form metamorphic rocks. Large tectonic movements and magma intrusions create earth movements and subsequently cause the pre-existing rocks to move and shift. In turn, the movements subject other rocks buried deep below the earth’s surface to extreme pressure and heat which contributes to changes in the rocks. Metamorphic processes come about at Heat from magma and friction along fault lines is the major contributor of the heat that brings about the rock changes. The rocks are heated between 150° and 795°C which has enough energy to break and reform the chemical compositions of the rocks so changing the rocks crystal structure. Pressure from the overlying rocks also increases the process of transformation. Even though the rocks do not actually melt, some mineral groupings redistribute the elements within the original minerals to form new compositions of minerals that are more stable at the new temperatures and pressures. Growing Together - Reaching Higher

Lesson Objectives Explain how metamorphic rocks are formed. Virtual Exit Ticket Click here to access your virtual exit ticket Click below for additional information on Meta morphic rocks… Metamorphic rocks Growing Together - Reaching Higher

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