U N I T 2 3 - 24 E X A M R E V I E W
7 TH G R A D E
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
IF THE NUMBER OF ORGANISMS
INCREASED BUT THE NUMBER
OF SPECIES DECREASED, WHAT
HAS HAPPENED TO
BIODIVERSITY?
Biodiversity has decreased as well
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
IF POLLUTION MOVES
THROUGH THE GROUND AND
INTO THE ROCK, WHAT TYPE
OF WATER IS BEING
AFFECTED?
Groundwater (water being used as wells)
WHAT FORCE
CONTINUES TO
CHANGE THE
COASTLINE OF TEXAS?
Wave Action – water from
waves
RIVERS MOVE SEDIMENT TO THE
OCEAN. WHAT CHANGE WOULD
BUILDING A DAM HAVE ON THE
DEPOSITION OF SEDIMENT?
More Sediment would deposit in the lake
WHAT NEGATIVE AFFECT DOES
FERTILIZER HAVE ON THE
ENVIRONMENT?
*It can be washed into streams
*Causes an overgrowth of algae
WHAT IS MOST LIKELY TO
HAPPEN WHEN IT RAINS ON A
SLOPE WHICH HAS LITTLE
VEGETATION ?
Mudslide. A great amount of erosion
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.
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.
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.
WHAT IS THE MOST COMMON
CAUSE OF POLLUTION IN
STREAMS, RIVERS, LAKES AND
OCEANS?
Run off from yards, farm fields, streets, and
paved roads.
WHAT LANDFORMS IN TEXAS
WOULD TAKE MORE THAN A
WEEK TO BE MADE IN NATURE?
Beaches, canyons, valleys, mountains
WHAT BIOME IN TEXAS IS TO
BE MOST AFFECTED BY
EROSION CAUSED BY WIND?
Desert, Beaches
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
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
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
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
WHICH AREA OF TEXAS WOULD
BE MOST AFFECTED BY A
WILDFIRE?
North Texas Prairie Grassland Biome