What is Convection ?
the movement caused within a fluid by the tendency of hotter and therefore less dense material to rise, and colder, denser material to sink under the influence of gravity, which consequently results in transfer of heat.
What is continental drift?
The hypotheses that the continents slowly move across earths surface
Climate change is a cause of extinction
False
extinction
The death off all organisms of a specie
What are the instruments for measuring fault?
Tiltmeter, Creepmeter, Laser-ranging device, GPS satellite
What is conduction?
the process by which heat or electricity is directly transmitted through a substance when there is a difference of temperature or of electrical potential between adjoining regions, without movement of the material.
What is Pangea?
The name of the single landmass that broke apart over 200 million years ago
An animal that only eats one type of food is at risk of becoming extinct if its taken away
True
Food web
A diagram that shows the complex feeding relationship between different food chains in an ecosystem
What is a seismograph?
A device that records ground movements caused by seismic waves as they move through the earth
What is Radiation?
the emission of energy as electromagnetic waves or as moving subatomic particles, especially high-energy particles which cause ionization.
What is a fossil?
A trace of an ancient organism that has been preserved in rock
A volcanic eruption is a natural cause for a ecosystem to change
True
What is the crust of the earth?
A layer of solid rock that includes both dry land and the ocean floor
What is a seismic waves?
Vibrations that travel through the earth carrying the energy released during an earthquake