• Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

Card Range To Study

through

image

Play button

image

Play button

image

Progress

1/62

Click to flip

Use LEFT and RIGHT arrow keys to navigate between flashcards;

Use UP and DOWN arrow keys to flip the card;

H to show hint;

A reads text to speech;

62 Cards in this Set

  • Front
  • Back
Canyon
a river that flows through a deep narrow valley
weathering
process of wearing down or breaking rock into soil, sand, and other small pieces
erosion
carries weathered materials way from one place
Deposition
drops the materials in a new location
Delta
particles of sand are deposited on a large flat area of land at the mouth of a river where the water flows into the ocean
sand dunes
large deposits of sand or gravel that were built by the flow of wind or water
eruption
melted rock from the earth's crust is released to the surface
earthquakes
shaking caused by rock slabs moving against each other deep below the earth's crust.
landslide
the sudden downhill movement of a huge mass of rock , soil and mud.
sedimentary rock
layers of ancient sand and silt
decomposition
decay of organisms into simpler forms of matter. Dead plants and animals.
fossil fuels`
heat and pressure change leftover carbon and hydrogen from dead organisms into gas and oil
soil
loose material made of rock, minerals and organic matter.
humus
deayed or rotting parts of once living things
natural resources
materials and energy sources found above, on or below the earth's surface. minerals, water, fossil fuels and food sources are examples
renewable resources
pleants, animals, and clean air and water. nature produces again and again
non-renewable resources
oil, natural gas and coal, are examples. They cannot by replaced quickly enough for people to use.
alternative energy
sources to replace fossil fuels, renewable, inexhaustible resources like water, sun, wind
Hydroelectric energy
produced by the energy of water moving through a dam.
geothermal energy
produced from the heat of melted rock deep below the earth's surface
biofuels
made from plants and animals , called biomass ex wood chips, plants oil and leftover food or waste products
solar energy
energy from the sun which is collected with solar panels. the energy is converted to a usable form
conservation
smart use and protection of natural resources. reduce, reuse and recycle
model
a picture, idea or object that represents and object or process
fossils
remains or traces of an organism that lived long ago
air pressure
the weight of air pressing on everything around it.
humidity
water vapor in the air
precipitation
water or ice that falls to earth
temperature
a measure of how hot or cold something is.
weather
a description of the outside air in a certain place at a certain time
climate
the general weather of an area over a long period of time.
wind
flow of air , created by the sun heating the air, warm aire expands and rises and cold air condenses and sinks creating wind.
cold front
when cold air sinks and warm air rises
warm front
warm air mass moves towards a cold air mass
weather maps
show fronts with blue triangles for cold and red half circles for warm
weather symbols
H and L that represent high or low pressure
thunderstorm
weather characterized by strong wind, rain and the presence of lighting ( an electric discharge)
Hurricane
a large rotating storm over the ocean with heavy rain and strong winds
tornado
rotating cone of air connceted to the ground.
haze
accumulation of dust, smoke, and other particles in the air that make it hard to see
fog
accumulation of water droplets in the air that make it hard to see
water cycle
movement of water between the air and earth. water changes state as it travels.
evaporation
heat energy from the sun causes water to change fro a liquid to a gas
condensation
water vapor rises, cools,and changes from a gas back to a liquid
precipitation
water that falls to earth as rain, snow, sleet or hail
physical property
a property that can be observed, measured, or changed without changing the substance
sun
a star that is a ball of gas
axis
an imaginary line that passes from the north pole to south pole through th eearth's core.
season
caused by the earth's tilt and the amount of sun that different parts of the earth receive.
revolve
orbit or circle
rotate
spin or turn
mountain
a large elevated landform that rises abruptly from the surrounding land
plain
low area that is flat
rock
solid mixtures of c\earth's crust
gravity
the force that pulls objects toward each other
tides
the twice a day ebbing (lowering) and rising of wather
new moon
the moon is in its orbit exactly between the sun and the earth so that the side closed to the earth appears dark. The side that faces the sun is lit up . In this phase we cannot see the moon in the night sky
first quarter moon
the moon continues to revolve around the earth. the moon's surface becomes visible as s thin crescent.
full moon
the entire side of the moon reflects sunlight back to earth. moon appears as a complete circle
third quarter moon
left half of a circle. continues to decreas in size.
orbits
moves around a star
solar system
all the planets and other objects that orbit the sun.