What regions have seasons marked by rainfall rather than temperature?
The tropics
100
Every 24 hours, the Earth completes one __________.
Rotation
100
The main processes of the water cycle:
Evaporation, condensation, and precipitation
100
Earthquakes often occur when two _______________ slide past each other.
plates
100
Which theory suggests that the continents were once part of one supercontinent?
Continental drift theory
200
What affects the amount of solar energy the planet receives?
Revolution
200
What creates Earth's change in seasons?
Tilt
200
Water shortages can result from ____________.
drought or overuse (overpopulation).
200
What is the most common cause of erosion?
Water
200
How are mountains built?
Collision of two continental plates
300
During which season does solar energy begin to increase?
Spring
300
Name the imaginary line around which the Earth turns.
Axis
300
Most of Earth's available freshwater is stored here.
Underground
300
What is lava?
Magma that reaches Earth's surface.
300
What are the causes of erosion?
WIND, ICE, AND WATER ALL CAUSE EROSION (MOVEMENT OF SEDIMENT FROM ONE LOCATION TO ANOTHER, THE WEARING AWAY OR BLDG UP OF LANDFORMS).
400
What are the seasonal winds that bring heavy rains called?
Monsoons
400
What is latitude?
Distance north or south of the equator.
400
What is surface water?
Water found in Earth's streams, rivers, and lakes.
400
Define weathering.
PROCESS OF BREAKING ROCK INTO SMALLER PIECES
400
What theory helps explain how forces below Earth's surface have shaped our landforms?
Plate tectonics
500
What parts of Earth can receive up to 24 hours of sunlight a day?
Areas near the Arctic and Antarctic circles.
500
Why do certain parts of Earth receive warmer temperatures than others?
PLACES TILTING TOWARD THE SUN AND PLACES AT LOWER LATITUDES EXPERIENCE WARMER TEMPERATURES
500
Describe the stages of the water cycle.
SURFACE WATER EVAPORATES INTO EARTH’S ATMOSPHERE, CONDENSES AND FORMS CLOUDS, AND THEN FALLS BACK TO EARTH AS PRECIPITATION.
500
How do glaciers cause erosion?
AS GLACIERS FLOW SLOWLY DOWNHILL, THEY ERODE THE LAND BY CARVING LARGE U-SHAPED VALLEYS AND SHARP MOUNTAIN PEAKS. ICE CRUSHES ROCK INTO SEDIMENT AND CAN MOVE HUGE ROCKS LONG DISTANCES
500
Name two ways that people change landforms.
Drilling tunnels thru mountains, building dams and canals, building terraces for farming.