Science Exam Revision

current

Flow of electrons (Measured in Amps)

Resistance

A material's opposition to the flow of electric current.

Voltage

The electric potential difference that drives current through a circuit, measured in volts.

Ohm's Law

Voltage (V) = Current (I) x Resistance (R)

Series Circuit

Components are said to be connected in series when they are connected end to end(in one loop). When there is a break in the circuit, the whole circuit is off. Current is the same

Parallel Circuit

Circuit in which the current can flow in two or more paths(when one branch breaks, the others still work). Voltage is the same across each branch

static electricity

A buildup of charges (electrons) on an object

metamorphic rock

A type of rock that forms from an existing rock that is changed by heat, pressure

igneous rock

A type of rock that forms from the cooling of magma/lava at or below the surface

sedimentary rock

A type of rock that forms when particles from other rocks or the remains of plants and animals are pressed and cemented together

Continental Drift

The hypothesis (Alfred Wegener) that states that the continents once formed a single landmass(Pangea), broke up and drifted to their present location. Evidence-(there are similar fossils that can be found in modern day countries that are spearatd by the sea, continents can fit together like a "Jigsaw"_

Convection Currents

a current caused by the rising of heated fluid and sinking of cooled fluid that occurs in the Mantle. Causes the plates to move on the Earth's surface.