End of Semester Test: Science 6B

The Taj Mahal in India is made of pure white marble. It is slowly losing its white color because of pollutants from vehicles and industries around it. The wear comes from acid rain.

The Taj Mahal is an example of weathering by ________ .

• ice and wind

• rainfall and chemicals

• wind and gravity

• wind and rainfall

• chemicals and gravity

The picture shows an example of contour plowing. How does this method help farmers?

• It reduces soil erosion.

• It reduces landslides.

• It reduces flooding.

• It increases crop yield.

• It reduces pollution.

Drag each label to the correct location on the chart.

Classify each process as weathering or erosion.

A:___, ___ / B: ___, ___, ___

(a)  

Which statement about metamorphic and sedimentary rocks is true?

• Both types of rocks form under high temperature, but sedimentary rocks also require high heat.

• Only metamorphic rocks show signs of rock layers.

• Both types of rocks form under high pressure, but metamorphic rocks also require high heat.

• Both types of rocks result from the cooling of magma.

• Either type of rock can be classified as intrusive or extrusive.

This rock is made from sand and pebbles joined together. The rock formed in a riverbed. It is an example of ____ rock.

• igneous

• metamorphic

• sedimentary

The Red Sea is widening at a rate of 1.25 centimeters per year. How many years will it take to widen another 812.5 centimeters?

• 600

• 650

• 750

• 800

• 812

This image illustrates the Great Glen Fault. The arrows show the directions in which the tectonic plates move. The fault at the boundary of these two tectonic plates is a _____.

• normal fault

• reverse fault

• strike-slip fault

A geologist finds fossils and rock that are older than the fossils and rock in the layer of earth directly beneath them. What caused this situation?

• uplift

• overturning of sedimentary rocks

• intrusion of igneous rocks

• seafloor spreading

• subduction

Identify the names of animals that lived on Earth before dinosaurs.

• early horses

• dinosaurs

• armored fish

• trilobites

Arrange the layers in order from youngest to oldest.

Layer 1 -> Layer 2. > Layer 3 -> Layer 4. > Layer 5 -> Layer 6 -> Layer 7 -> Layer 8

(a)