BNSG Erosion

1. Erosion can be caused by exposure to all of the following agents, except for _____.

Water & ice

Wind & sleet

Heat & solar radiation

Sand & chemicals

2. Sometimes, when liquid water gets into the cracks in rocks and the temperature drops below 0ºC, the water _____.

Turns to ice

Expands

Breaks up the rocks

All of the above

3. Hoodoos, windows, and grottos are all examples of _____ formations.

Snow

Ice

Rock

Sand

4. Sometimes the brownish-red streaks that you see on rocks outdoors are caused by _____.

Potassium hydroxide (potash)

Sodium chloride (salt)

Potassium nitrate (saltpeter)

Iron oxide (rust)

5. Nye attacks some "plastic foam mountains" with a _____.

Fire hose

Sand blaster

Hot air gun

Pencil sharpener

6. Trees and plants _____.

Always speed erosion up

Always speed erosion down

Sometimes speed erosion up and sometimes slow it down

(Trees and plants have no effect on erosion.)

7. In the ER-osion the doctor calls for a Code Green on _____.

The Statue of Liberty

Kermit the Frog

The Incredible Hulk

The Wicked Witch of the West

8. MacGoober plans to escape from an abandoned warehouse with the help of a _____.

Piece of sandpaper

Dripping faucet

Hair dryer

Nail file

9. At the Erosion Spa, you can slough off life's worries the natural way though all of the following processes, except for a(n)_____.

Solar flare massage

Chemical erosion chamber

Wind & sand exfoliating scrub

Acid rain soak

10. Lichen feeds on chemicals in _____.

Sunlight

Microbes

Dead organic matter