weather
why do tides happen?
Tides are primarily caused by the Moon's gravitational pull on the Earth's oceans
what is the Earth's largest ocean
the Pacific ocean
what is an ecosystem
a community if living things
what is kinetic energy
energy of motion
what are the four main spheres of Earth's systems
geosphere atmosphere hydrosphere biosphere
what instrument is used to measure temperature?
Thermometer
what causes Earth's seasons
the tilt of Earth's axis
what is the role of decomposers in an ecosystem
they recycle nutrients
what is potential energy
stored energy
what is the water cycle
movement of the water on earth
whats the difference between weather and climate
weather is now and climate is long term
what is the name of earths only natrual satiate
the moon
what is biodiversity and why is it important
vairety of life = healthy ecosystems
what is the law of conservation of energy
energy cannot be created nor destroyed
what is plate tectonics
movement of Earth's plates
what causes wind
air pressure diffrences
what is earth largest land mass
Eurasia
what do keystones species do?
keystones species make big impact small numbers
what are Renewable energy sources
naturally replenished energy
what is the greenhouse effect
heat trapping by gases
what is precipation
water falling from the atmosphere
what is the approximate percantge of Earth's surface covered by water
71%
whats the difference between a habitat and a ecosystem
habitat- where it lives ecosystem- everything interacting
what is fossil fuel
energy from anciet organisms
what is weathering
breakdown of rocks