7th Grade Earth Science Review

The Earth's actual shape is most correctly described as

• a circle

• a perfect sphere

• an oblate sphere

• an eccentric ellipse

Earth's interior at a depth of 3500 kilometers is believed to be a

• liquid at a temperature of approximately 4900c

• solid at a temperature of approximately 4900c

• liquid at a temperature of approximately 5400c

• solid at a temperature of approximately 5400d

Tags

NGSS.MS-PS1-4

At which depth below Earth's surface is the boundary between Earths outer core and the stiffer mantle located?

• 700km

• 2000km

• 2900km

• 5100km

NYS highest peak, Mt. Marcy, is located at approximately

• 44° 10' N, 74° 05' W

• 44°05' N 73°55' W

• 73°55' N 44°10' W

• 74°05' N 44°05' W

Shipwreck

In 1641, the crew of the ship Concepcion used the Sun and stars for navigation. The crew thought that the ship was just north of Puerto Rico, but ocean currents had carried them off course. The ship hit a coral reef and sank off the coast of the Dominican Republic. The Xon the map marks the location of the sunken ship.

What is the approximate latitude and longitude of the sunken ship?

• 20.5° N 70° E

• 20.5° N 70° W

• 20.5° S 70° E

• 20.5° S 70° W

Base your answers on the topographic map below, which represents elevation contours measured in meters. Four straight lines, AB, CD, EF, and GH, have been drawn for reference purposes.

What could be the elevation of point X?

• 819 m

• 826 m

• 841 m

• 850 m

Base your answer to the question on the topographic map below, which represents elevation contours measured in meters. Four straight lines, AB, CD, EF, and GH, have been drawn for reference purposes.

In which general direction does Mill Creek flow?

• east to west

• west to east

• north to south

• south to north

Tags

NGSS.MS-ESS2-4

Which mineral is the major component of drywall?

• talc

• calcite

• muscovite mica

• selenite gypsum

Which characteristic do samples of the mineral pyroxene usually exhibit?

• yellow to amber color

• bubbling in hydrochloric acid

• cleaves at 56°

• hardness of 5 to 6

Base your answer on the cross sections of three rock outcrops, A, B, and C. Line XY represents a fault. Overturning has not occurred in the rock outcrops.

Which processes were primarily responsible for the formation of most of the rock in outcrop A?

• melting and solidification

• heating and compression

• compaction and cementation

• weathering and erosion