PMA

A glacier can travel over the surface of Earth and reshape it. The chart describes three things a glacier can do.

Which terms BEST describe these glacial actions in the order as presented?

• chemical weathering, mechanical weathering, erosion

• weathering, erosion, deposition

Tags

NGSS.MS-ESS2-2

Limestone has weathered and eroded over thousands of years through the action of wind, acid rain, and other agents. Which type of energy is primarily involved as acid rain weathers the limestone?

• chemical energy

• thermal energy

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which is most directly responsible for building up a river delta?

• deposition

• leaching

Oceanic crust is composed mainly of basalt. Continental crust is composed mainly of granite. Why does oceanic crust generally tend to subduct under continental crust when plates collide?

• The oceanic crust is thicker than the continental crust.

• The oceanic crust is denser than the continental crust.

Tags

NGSS.MS-ESS2-1

Which scale is used to report the intensity of an earthquake?

• Modified Mercalli Scale

• Richter Magnitude Scale

Cracks in rocks widen as water in them freezes and thaws. How does this affect the surface of the Earth?

• It reduces the rates of soil formation.

• It exposes rocks to increased rates of erosion and weathering.

Tags

NGSS.MS-ESS2-2

The Mariana islands are volcanic islands that form an arc. The island arc is located in the North Pacific Ocean. These islands were formed by converging tectonic plates.

• melting of oceanic crust at subduction zones

• melting of oceanic crust at mid-ocean ridge

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

The roller coaster cart has the most kinetic energy at position-

• W

• X

• Y

• Z

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Which of these claims best describes how scientific idea change?

• New evidence leads to modification of ideas

• Scientific ideas rarely change, because they are based on extensive evidence

• As a scientific idea changes, it eventually becomes a scientific theory and then a law

• Scientists form opinions based on evidence and decide how the idea should change

What is the energy transformation that occurs in an electric pencil sharpener?

• mechanical energy to electrical energy

• electrical energy to mechanical energy

• radiant energy to sound energy

• chemical energy to mechanical energy