Jackline98

List three examples of potential errors that make it virtually impossible for ancient skywatchers to pinpoint the exact location of the moonrise or moonset on the distant horizon on a daily basis. - ️️Ancient astronomers could only pinpoint the moon when it hit the horizon, which is not necessarily when it sets or rises. Bad weather and clouds can also mask the moon occasionally. Astronomers would need to measure the position of the moon from the same point on the moons disk every time, whic...

In order to match rocks of similar age in different regions, geologists often use - ️️Fossils / Sequence of beds / Similarity of rock types linear upfolded structures with the oldest strata in the center are termed - ️️Anticlines Metamorphic facies are defined according to: - ️️groups of minerals that occur together over a range of pressures and temperatures Minerals found in metamorphic rocks can indicate: - ️️the temperature the rock is subjected to, the pressure the rock is...

A _______ volcano has steep flanks, symmetrical cone shapes, distinct craters, and a silica-rich magma that results in an explosive eruption style. a. Cinder cone b. Caldera c. Stratovolcano d. Flood basalt - ️️C A __________ is a volcanic hazard arising from a collapsing eruption column that runs downhill at high speeds (>100 mph). These are associated with explosive eruptions and a mix of lava, lapilli, pumice, ash, and hot gases. a. cinder b. lahar and ash flow c. pyroclastic f...

What is the expected luster of pyrite? - ️️metallic What is the expected luster of quartz? - ️️vitreous/glassy What is the famous national park in this picture? - ️️Yosemite National Park What is the Mohs scale (on what is it based), and what value on that scale is represented by quartz? - ️️A series of 10 minerals used as a standard in determining hardness. 1 talc 2 gypsum (2.5 - fingernail) 3 calcite penny 4 fluorite nail 5 apatite (5.5 - glass) (5-6.5 knife b...

Which of the following rocks is composed of clay-sized clastic sediment? - ️️shale Which of the following sedimentary rocks is composed of biochemically precipitated silica? - ️️chert Which of the following terms describes the alteration of sediments to sedimentary rocks after deposition? - ️️diagenesis Which one of the following parent-daughter isotope pairs is commonly used for numerical dating of minerals and rocks? - ️️uranium-lead Which primary component of clastic sedim...

The Upper Shale is a? - ️️wetland and swamp that is muddy and plant-rich The youngest islands in this picture are? - ️️bottom right Trenches are only associated with divergent plate boundaries ________. - ️️False What caused more damage to the Parthenon in Athens, Greece? - ️️Air pollution from cars in the past 50 years What is the most abundant element in the crust of the Earth? - ️️Oxygen What is the percent of pyroxene in a gabbro? - ️️5%-35% What is the Roche Li...

Cross-bedding is commonly found in - ️️sandstone If a body of magma is subjected to fractional crystallization by cooling, the rock that forms is expected to be ________, in comparison to the residual magma. - ️️more mafic than the magma Igneous rocks ________ - ️️are formed through the freezing of melt can be produced at the surface of the Earth as well as deep below the surface are the most common types of rocks within the Earth In the illustration, the red line represents wha...

what is uniformitarianism? - ️️the present is the key to the past - the processes that are going on today to shape the Earth are the same processes that have always been going on (James Hutton) what is steno's law state? - ️️the angles between equivalent crystal faces of the same mineral are always the same what is streak? - ️️the color of the mineral in powdered form what is the asthenosphere? - ️️weak layer of the mantle beneath the lithosphere, deforms to accommodate the...

Cooler, older, oceanic lithosphere sinks into the mantle at ______ . - ️️subduction zones along convergent plate boundaries Correct statements - ️️1. Magmas crystallize to form igneous rocks. 2. Igneous rocks can undergo metamorphism. 3. Metamorphic rocks may melt to become magma. 4. Igneous rocks may undergo weathering and produce sediments. Diorite - ️️Texture: Phaneritic Composition: Intermediate Gabbro - ️️Texture: Phanertic Composition: Mafic Garnet Mg3Al2(SiO4)3 - ...

What type of boundary creates huge mountain ranges such as the Himalayas? - ️️continent-continent convergent boundary What type of boundary creates volcanoes? - ️️Ocean-Ocean Convergent Boundary What type of boundary is the San Andreas Fault? - ️️transform boundary What type of earthquakes at transform boundary? - ️️shallow earthquakes What type of plate boundary do we live on here in the PNW? - ️️ocean-continent convergent Where are fossils usually found - ️️Limesto...