Practice Semester 2 Exam

What is the top layer of the Earth's surface called? 

• Mantle
• Innercore
• Outercore
• Crust

Is the outer core a liquid or solid?

• liquid
• solid

Pressure ______________________ as you go deeper into the Earth

• increases
• decreases 
• goes up or down depending on the layer
• stays the same

The outer core is made up of liquid iron and nickel?

• true

• false

Which layer of the Earth is the most dense?

• crust

• lower mantle

• outer core

• inner core

Which liquid has the highest density?

• oil

• water

• syrup

Answer explanation

More dense substances (higher #) sink to the bottom. Less dense substances float to the top

Frank has a paper clip. It has a mass of 9g and a volume of 3cm³. What is its density?

• 3 g/cm³
• 1/3 g/cm³
• 27 g/cm³
• 39 g/cm³

Put the liquids in order from most dense to least dense?

• 4, 3, 2, 1
• 1, 2, 3, 4
• 3, 4, 2, 1, 
• 4, 3, 1, 2

Most earthquakes tend to occur at which location?

• The central regions of very large continents

• Groups of islands farthest from any continents

• The boundaries between continents and oceans

• The steep slopes of the very oldest mountains

Tectonic plates float on top of the ________

• Crust

• Mantle

• Inner Core

• Outer Core