A
What is force?
A push or a pull
What is friction?
A force that opposes motion between two surfaces that are in contact
What is gravity?
A force of attraction between objects that is due to their masses
What is air resistence?
The process by which sediments are pressed together under their own weight
A rock that forms from compacted or cemented layers of sediment
What is a river delta?
A triangular area of sediment deposited at the mouth of a river
What is a canyon?
A deep, narrow valley with steep sides formed by fast, flowing water
A deposit of wind-blown sand
What is a U-Shaped valley?
The shape of a valley formed by erosion of a glacier
What are fossil fuels? (examples)
Coal, oil, natural gas, and other fuels that are ancient remains of dead plants and animals
What is Hydroelectric energy?
Electricity generated from the force of moving water
The energy captured by transforming the motion of air into electrical energy using a turbine
What is biofuel?
Fuel, as wood or ethanol, that comes from biomass
What is a rotation? (Earth)
Earth's spinning on its axis (day/24hrs)
Earth's yearlong orbit around the sun (1yr)
What is the water cycle?
The continuous process by which water moves from Earth's surface to the atmosphere and back
What is carbon dioxide and oxygen cycle?
The two main gases exchanged or interacted by living organisms during respiration and photosynthesis
What is photosynthesis?
Plants take in carbon dioxide, water, and sunlight; then they make food and give off oxygen
What is weather?
The condition of earths atmosphere at a particular time and place
What is climate?
Overall weather in an area over a long period of time
What is a barometer used for?
An instrument used to measure air pressure
What is food chain?
A series of steps in which organisms transfer energy by eating and being eaten
What is an adaptation?
A trait that helps an organism survive and reproduce