on April 2, 2022
How is relative age important to the geologic time scale?
Regional SpecificsRelative Age Dating Geologists determine the sequence of events from their position in the rock record with older events/rocks usually occurring in the lowest layers and later events higher in the rock sequence. Why is relative age important? Relative age means age in comparison with other rocks, either younger or older. The relative ages of
on April 2, 2022
Do metamorphic rocks form when melting occurs?
Regional SpecificsThe process of metamorphism does not melt the rocks, but instead transforms them into denser, more compact rocks. New minerals are created either by rearrangement of mineral components or by reactions with fluids that enter the rocks. Does metamorphic rocks be formed from melting? In order to create metamorphic rock, it is vital that the
on April 2, 2022
What is BrainPOP weathering?
Regional SpecificsWhat is weathering? A process the breaks down rocks into smaller pieces. What Brainpop forces cause mechanical weathering? TIM: Mechanical weathering breaks down rocks without changing their chemical composition. Forces like growing plants, expanding ice, lightning, and mineral crystal growth can all cause mechanical weathering. What impact does weathering have on soil formation Brainpop? What
on April 2, 2022
What is considered a Ferromagnesian silicate?
Regional SpecificsFerromagnesian silicates contain iron (Fe) or Magnesium (Mg). These elements produce dark mineral colors. The ferromagnesian minerals tend to look metallic in their luster, have relatively high density, and are often magnetic. Non-silicate minerals include a wide variety of minerals. What mineral is a Ferromagnesian silicate? Biotite mica can have iron and/or magnesium in it
on April 2, 2022
How do you get to Siccar point?
Regional SpecificsSiccar Point is a short walk from the nearest road, and it is signposted as part of the Berwickshire Coastal Path, which runs from Cockburnspath to Berwick upon Tweed. One of the best approaches is along the coastal path from Cove to the north – this is a 6 km walk on grassy paths and
on April 2, 2022
What are two ways volcanoes can form near convergent boundaries?
Regional SpecificsAs the sinking plate moves deeper into the mantle, fluids are released from the rock causing the overlying mantle to partially melt. The new magma (molten rock) rises and may erupt violently to form volcanoes, often building arcs of islands along the convergent boundary. What are two ways volcanoes can form? Divergent boundaries (crust moves