8TH SCIENCE CRUNCH WEEK 2

Each answer choice is an example of a component of one of the earth’s spheres. Drag and drop the answer choices into the correct sphere. Each answer choice is used only once.

• Geosphere

• mountains, rocks

• Atmosphere

• rivers, ice

• Hydrosphere

• trees, insects

• Biosphere

• oxygen, nitrogen

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SC.6.E.7.4 - Sphere Interactions

Grace makes a saturated sugar solution by dissolving sugar grains in warm water, stirring, and adding more sugar until it no longer dissolves. Grace then allows the solution to come to room temperature. Grace pours equal volumes of the sugar solution into five beakers. Grace places a string into each of the beakers, with one end of the string hanging free outside of the glassware. Grace then places the beakers into five chambers of varying temperature (5, 10, 15, 20, and 25 degrees Celsius). Grace allows the beaker and string to sit for two weeks. At the end of the experiment, Grace notices crystals have formed in the string. Grace masses the amount of crystals that have formed from the sugar solution on the string.

• The dependent variable is the level of crystal formation and Grace is modeling the formation of igneous rock from magma.

• The dependent variable is the level of crystal formation and Grace is modeling the melting of metamorphic rock to form magma.

• The dependent variable is the temperature at which crystals form and Grace is modeling the formation of igneous rock from magma.

• The dependent variable is the temperature at which crystals form and Grace is modeling the melting of metamorphic rock to form magma.

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SC.7.E.6.2 - The Rock Cycle and Related Events

Avery and Mason are studying Earth's history and learn that it is over four billion years old. They discover that indirect evidence, such as radioactivity of certain elements found in rocks, as well as direct evidence, such as observations of Earth's rock layers, are used to help scientists make these calculations. Rock formations and the fossils within them can help scientists establish relative ages of major events in Earth's history. Which statement describes the most accurate conclusion scientists can make based on the evidence given?

• Scientists conclude sandstones with ripple marks might indicate a shoreline habitat or a riverbed.

• Upon discovering pieces of cracked limestone, a scientist concludes an earthquake happened in that area.

• After discovering a thick layer of igneous rock, scientists conclude that area was once part of an ocean.

• A scientist discovers a layer of dark metamorphic rock and concludes a volcano had erupted in that location.

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SC.7.E.6.4 - Theories that Earth has Evolved

Spring break had arrived and Yarol's family went camping along the river seen here. During their stay, the family dug for fossils. Yarol's father found pieces of elk skull and the bones of some other unidentified animals. Yarol found an insect encased in amber and his little brother found two or three shark's teeth.

Based on the family's fossil evidence, what can we hypothesize about the past history of the camp site?

• It was once glaciated.

• It was once underwater.

• There was no river in the area.

• The climate was much colder in the past.

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SC.7.E.6.4 - Theories that Earth has Evolved

Dani and Sophia were hiking near a volcano and noticed steam rising from the ground. They learned that heat generated from the radioactive decay of elements deep in the interior of the Earth creates magma or molten rock, in the outer layer of the mantle. The deep, hot magma becomes less dense than the cooler, upper mantle and rises, causing the tectonic plates to move. What is this process called?

• Convection currents

• Subduction

• Seafloor spreading

• Continental drift

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SC.7.E.6.5 - Plate Tectonics

During a science class, Tyler and Benjamin learned that heat generated from the radioactive decay of elements deep in the interior of the Earth creates magma or molten rock, in the outer layer of the mantle. The deep, hot magma becomes less dense than the cooler, upper mantle rocks and the magma rises, while the cooler rocks sink.

This movement of the warmer and cooler mantle creates pockets of circulation within the mantle called ________, which creates the force behind the movement of tectonic plates.

• magma currents

• density currents

• convection currents

• conduction currents

Benjamin and Abigail are studying tectonic plates in their geography class. They learn that tectonic plates, part of the lithosphere, are carried along on top of the asthenosphere (upper mantle) due to the rise and fall of magma and rocks within the mantle. Complete this sequence of events: radioactive decay → heat circulation → plate movement → ________

Choose the ONE that DOES NOT apply.

• earthquake

• volcano formation

• sea floor spreading

• layering of sediment

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SC.7.E.6.5 - Plate Tectonics

Choose the ONE answer that DOES NOT apply to geological processes that can cause significant changes to the Earth's surface.

• earthquake

• volcanic eruption

• sea floor spreading

• layering of sediments

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SC.7.E.6.5 - Plate Tectonics

During a field trip to a natural history museum, Michael and Rhian learned about different types of rocks. Which type of rock is most likely to contain fossils?

• Volcanic rock

• Igneous rock

• Metamorphic rock

• Sedimentary rock

Tags

NGSS.MS-ESS2-3

NGSS.MS-LS4-1

Aiden is studying different types of rocks in his geology class. He learns that one type of rock is formed from the cooling and solidification of magma or lava. Which type of rock is Aiden learning about?

• Igneous rock

• Metamorphic rock

• Volcanic rock

• Sedimentary rock