Earth Science: Expert Mode

According to the law of superposition, which layer is the youngest?

• A
• B
• C

Some scientists have concluded that modern-day birds evolved from reptiles based on fossil evidence. What evidence best supports this conclusion?

• Fossils of both bird and reptile eggs look similar.

• Fossils of dinosaurs contain similar skeletal structures to both reptiles and birds.

• Fossil data suggests that birds and reptiles lived in the same era.

• Fossils show that birds and reptiles have similar behavioral adaptations.

The starfish fossil in the diagram below was found in the Guadeloupe Mountains. Which can most likely be concluded regarding the place where this fossil was found?

• The mountains were covered by sea water at some point in the past.

• The mountain environment was much more arid at some point in the past.

• The mountains were covered by glaciers at some point in the past.

• The mountain environment was much colder at some point in the past.

Which Rock type would be best to find fossils?

• Igneous Rock
• Sedimentary Rock
• Metamorphic Rock

How could there be fossils of ocean animals in states that are hundreds of miles from the sea?

• Lots of the same animals live in those states too.
• Groundwater must have carried to fossils to those states.
• Seawater must have covered those states at one time.
• Animals carried the fossils to those states.

What is underground molten rock?

• Lava

• Magma

• Soil

• Intrusive

What is aboveground molten rock?

• Extrusive

• Magma

• Lava

• Sedimentary

Intrusive & extrusive are 2 types of...

• sedimentary

• metamorphic

• Igneous

This rock was formed when molten rock cooled into a solid. What type of rock is it?

• Igneous Rock
• Metamorphic Rock
• Sedimentary Rock

The process when rocks break into smaller pieces due to exposure to natural elements is called

• erosion
• weathering
• sediments