1. REVIEW UNIT 23-24 EXAM REVIEW 7 TH GRADE

2. WHEN YOU DUMP OILS AND CHEMICALS ON THE GROUND, WHERE DOES IT END UP GOING? In the ground and pollutes ground water or Pollutes a lake or ocean from run off

3. IF THE NUMBER OF ORGANISMS INCREASED BUT THE NUMBER OF SPECIES DECREASED, WHAT HAS HAPPENED TO BIODIVERSITY? Biodiversity has decreased as well

4. IF A SMALL METEOR CRASHED INTO EARTH AND DUST CLOUDED A LARGE AREA FOR A FEW MONTHS, WHAT WOULD HAPPEN TO LIFE AND CLIMATE IN THAT AREA? Life would diminish without sunlight – producers can’t produce, consumers starve. Climate – gets colder

5. IF POLLUTION MOVES THROUGH THE GROUND AND INTO THE ROCK, WHAT TYPE OF WATER IS BEING AFFECTED? Groundwater (water being used as wells)

6. WHAT FORCE CONTINUES TO CHANGE THE COASTLINE OF TEXAS? Wave Action – water from waves

7. RIVERS MOVE SEDIMENT TO THE OCEAN. WHAT CHANGE WOULD BUILDING A DAM HAVE ON THE DEPOSITION OF SEDIMENT ? Sediment would deposit in the lake formed from the dam

8. WHAT NEGATIVE AFFECT DOES FERTILIZER HAVE ON THE ENVIRONMENT ? *It can be washed into streams *Causes an overgrowth of algae

9. WHAT IS MOST LIKELY TO HAPPEN WHEN IT RAINS ON A SLOPE WHICH HAS LITTLE VEGETATION ? Mudslide. A great amount of erosion

10. WHAT CATASTROPHIC EVENT WOULD HAVE THE BIGGEST CHANGE ON THE AMOUNT OF WATER AVAILABLE TO PEOPLE WHO RELY ON GROUNDWATER AS A DRINKING SOURCE? A DROUGHT. No water for a long period of time.

11. SOIL EROSION IS A COMMON PROBLEM ON RIVER BANKS. WHAT SHOULD BE DONE TO HELP PREVENT SOIL EROSION? WHY DO THIS? Plant something so the roots can hold the soil back.

12. WHAT WOULD A LANDSLIDE DO TO THE ENVIRONMENT AND WHAT WOULD ANIMALS NEED TO DO IN ORDER TO SURVIVE? A landslide would destroy habitats and bury food sources so the animals would need to move to a new location.

13. WHAT IS THE MOST COMMON CAUSE OF POLLUTION IN STREAMS, RIVERS, LAKES AND OCEANS? Run off from yards, farm fields, streets, and paved roads.

14. WHAT LANDFORMS IN TEXAS WOULD TAKE MORE THAN A WEEK TO BE MADE IN NATURE? Beaches, canyons, valleys, mountains

15. WHAT BIOME IN TEXAS IS TO BE MOST AFFECTED BY EROSION CAUSED BY WIND? Desert

16. WOULD IT BE A GOOD IDEA TO BURY CHEMICALS UNDERGROUND TO PREVENT CONTAMINATION OF OUR LAKES, RIVERS AND OCEANS? WHY? No because it can contaminate ground water which many people use to drink

17. SAN ANTONIO HAS VERY HILLY TERRAIN, WITH SPARSE VEGETATION. WHAT NATURAL DISASTER WILL MOST LIKELY OCCUR IF A SLOW MOVING THUNDERSTORM DEPOSITS HEAVY RAIN IN A SHORT PERIOD OF TIME? A Flash Flood

18. IF GASOLINE LEAKS FROM AN UNDERGROUND STORAGE TANK, WHAT AFFECT COULD THIS HAVE ON THE WATERSHED? Ground Water could be contaminated Note: Gas is the most toxic substance found in groundwater

19. VOLCANIC ERUPTIONS DEPOSIT LAVA ON THE SURFACE OF THE EARTH. WHAT ACTION IS A GOOD BALANCE TO THIS DEPOSITION? Weathering Note: lava cools down and becomes rock