AIR review

Of the following statements, which best supports the continential drift theory?

• All oceans are salty

• Igneous roks are found on all continents

• Fossils of the same species of extinct land plnats have been found in both South America and Africa

• Early humans migrated to North America over a land bridge from eastern Asia

Which of the following Earth layers has the greatest density?

• Crust

• Mantle

• Outer core

• Inner core

What is the primary cause of continental plate movement?

• Rotation of Earth on its axis

• Uneven heating of the mantle

• Density differences within the atmosphere

• Gravitational pull of the Moon on continents

The Hawaiian Islands are younger on the eastern end than the western end of the island chain.

What is causing the age differences among the islands?

• Two crustal plates are colliding.

• A divergent boundary exists in the ocean floor

• An ocean plate is moving southeast across a hot spot

• An ocean plate is moving northwest across a hot spot

Which of the following layers of rock is MOST LIKELY the youngest?

• The layer containing trilobites

• The layer containing fish

• The layer containing amphibians

• The layer containing dinosaurs

Which of the following layers fo rock is MOST LIKELY the oldest?

• The layer containing trilobites

• The layer containing fish

• The layer containing amphibians

• The layer containing dinosaurs

In the digram shown above, which rock layer is probably the oldest?

• Layer 1

• Layer 2

• Layer 5

• Layer 6

Is the fault line younger or older than layer 1?

• Younger

• Older

What is the genotype of the parent on the top of the Punnett Square?

• Heterozygous

• Homozygous Dominant

• Homozygous Recessive

What is the genotype of the parent on the left side of the Punnett Square?

• Heterozygous

• Homozygous Dominant

• Homozygous Recessive