Name ________________________
Date ___________________
Unit 4 Review
1. What possible effects would carbonation have on limestone in the Texas hill country?
2. Which catastrophic events are caused due to plate tectonic movement?
3. During our labs, which material had the greatest porosity?
4. Define an ecoregion.
5. Why would you want to seal a birdbath with a watertight solution?
6. Define an aquifer.
7. What most likely caused the formation of the Inner Space Cavern in Georgetown, TX,
which is located under the Edwards Plateau ecoregion?
8. What most likely formed the sand dunes on Padre Island?
9. What most likely is changing Enchanted Rock, a pink granite rock formation located in
the Llano Uplift ecoregion?
10. During the aquifer demonstration, what did the food color moving through the gravel
best represent?
11. The downward movement of water from the land surface into the soil caused by gravity
is called ____________________.
12. Define porosity.
13. How might a neighborhood stream be changed if new homes, new streets, and new
storm drains have been increased?
14. What would cause a big change in the amount of water available to people that use
aquifers?
15. When people improperly dispose of chemicals, how may their actions hurt the
environment?
16. If you were a farmer wanting to place a new farm on a stream, which happens to be
close to a factory, where would you want your farm?
17. Most ground water contamination from the US most likely originates from what source?
18. Fertilizer can seep through the ground to reach groundwater. When fertilizer reaches
groundwater, what effect can it have?
19. Sand for beaches comes from rocks in the area that are weathered down, and their
sediment is deposited. The beaches are then eroded, and the sediment is moved away
from the beaches. If rocks stopped weathering, how would the beach change?
Name ________________________
Date ___________________
Unit 4 Review KEY
1. What possible effects would carbonation have on limestone in the Texas hill
country?
Leads to formation of underground caves
2. Which catastrophic events are caused due to plate tectonic movement?
Tsunamis and Earthquakes
3. During our labs, which material had the greatest porosity?
Pebbles
4. Define an ecoregion.
Large geographical areas that have similar climate, animals, and plant species
5. Why would you want to seal a birdbath with a watertight solution?
In cold weather, any water that seeps into the concrete could cause it to crack
6. Define an aquifer.
Underground area where large quantities of water accumulate
7. What most likely caused the formation of the Inner Space Cavern in Georgetown, TX,
which is located under the Edwards Plateau ecoregion?
The erosion of limestone, as CO2 and rainwater formed carbonic acid
8. What most likely formed the sand dunes on Padre Island?
The deposition of sand carried by swift wind blowing along the coast
9. What most likely is changing Enchanted Rock, a pink granite rock formation located
in the Llano Uplift ecoregion?
The process of exfoliation, causes slabs of granite to break away
10. During the aquifer demonstration, what did the food color moving through the
gravel best represent?
Pollution of groundwater
11. The downward movement of water from the land surface into the soil caused by
gravity is called ___percolation_________________.
12. Define porosity. The measure of the amount and size of pore spaces between
Earth’s materials
13. How might a neighborhood stream be changed if new homes, new streets, and new
storm drains have been increased?
Increase pavement will increase amounts of water flowing into creek, causing
stream bank to erode
14. What would cause a big change in the amount of water available to people that use
aquifers? Long periods without rainfall
15. When people improperly dispose of chemicals, how may their actions hurt the
environment?
Pollutants will go deep into the soil and pollute the groundwater
16. If you were a farmer wanting to place a new farm on a stream, which happens to be
close to a factory, where would you want your farm?
Upstream from the factory since the river will have been impacted the least by
human activities
17. Most ground water contamination from the US most likely originates from what
source?
Fertilizers
18. Fertilizer can seep through the ground to reach groundwater. When fertilizer
reaches groundwater, what effect can it have?
Fertilizer can cause groundwater to become undrinkable
19. Sand for beaches comes from rocks in the area that are weathered down, and their
sediment is deposited. The beaches are then eroded, and the sediment is moved
away from the beaches. If rocks stopped weathering, how would the beach change?
The beach would lose sediment because sand would still erode away, and there is
no new sediment being deposited