ESRT Review

A stream flowing at 0.3 cm/s can erode what type of sediment?

• Pebbles, sand, silt, and clay
• Sand, silt, and clay
• Silt and clay
• Clay Only

What is the largest sediment size that a stream flowing at 10 cm/s can carry?

• 1.0 cm
• 0.2 cm
• 0.1 cm
• 0.01 cm

For a stream to carry a sediment the size of 20 cm, how fast must it's velocity be?

• 200 cm/s
• 100 cm/s
• 50 cm/s
• 500 cm/s

Which sediment requires the least amount of velocity to be eroded?

• Cobbles
• Pebbles
• Silt
• Clay

What type of sediment has a diameter of 0.003 cm?

• Sand
• Silt
• Clay
• Pebbles

How old is a bone that has 12.5% of the original amount of radioactive carbon-14 remaining?

• 5,700 years
• 11,400 years
• 17,100 years
• 22,800 years

According to the graph, what is the half-life of this isotope?

• 100 years
• 150 years
• 200 years
• 300 years

The surface temperature of which sample increased at the slowest rate?

• water
• basaltic sand
• copper pennies
• iron fragments

The average rate of temperature change, in Fahrenheit degrees per hour, between 6 a.m. and noon was

• 6 °/h
• 8 °/h
• 3 °/h
• 18 °/h

What is the density of this material?

• 1.0 g/cm3
• 5.0 g/cm3
• 10.0 g/cm3
  
• 20.0 g/cm3