6th grade CBA Modified Retest

The Grand Prismatic Spring, shown in the image below, is a natural hot spring with vibrant colors caused by mineral deposits and thermophilic bacteria.

What type of rocks do you think are formed here and why?

• Responses

  • Metamorphic rocks, because they form from intense heat and pressure changing existing rocks.

• • Igneous rocks, because they form from the cooling of molten lava.

• • Sedimentary rocks because minerals and particles settle and harden over time.

• • No rocks are formed here because the water constantly dissolves any material.

Tags

NGSS.MS-ESS2-2

What geologic processes change a metamorphic rock into an igneous rock?

• • Heat and pressure

• • Compaction and cementation

• •  Melting and cooling

• • Weathering and erosion

How does the texture of an igneous rock that formed from a volcanic eruption compared to the texture of an igneous rock that formed from magma cooling underground? 

• The rock that formed from the volcanic eruption would have a more fine-grained texture compared to the rock that formed from magma cooling underground.

• The rock that formed from the volcanic eruption and the rock that formed from magma cooling underground would both have a fine-grained texture.

Tags

NGSS.MS-PS1-4

Sandstone is a sedimentary rock. A sandstone rock was deposited in the ocean and is now being buried and pulled down toward the mantle. As it moves deeper into Earth, the pressure and temperature of the rock changes. 

According to the graph, at what point would the sandstone melt and become an igneous rock?

• Point A

• Point D

Which process needs to occur to change the metamorphic rock, shist, into sand and clay sediments?

• Weathering and Erosion

• Heat and Pressure

• Melting and Crystalization

Tags

NGSS.MS-ESS2-1

Fossil fuels are burned to generate electrical power, like coal to a barbecue pit. Based on this information, which best summarizes the advantages and disadvantages of burning fossil fuels for power?

• Advantage: Fossil fuels are relatively cheap.
  Disadvantage: Fossil fuels produce a small amount of electricity.

• Advantage: Fossil fuels can generate a large amount of energy.
  Disadvantage: Fossil fuels release pollutants when they are burned.

Tags

NGSS.MS-ESS3-3

A device that continues to use energy and drain power when left plugged in, even when it is turned off, uses a type of energy called vampire energy. Video console is the example of this energy.

• True

• False