Electricity
Plate Tectonics
Atmosphere/Hydrosphere
Earth as a Planet
Solar System/Stars and Galaxies
100

what is Electric current  

 a flow of charged particles, such as electrons or ions, moving through an electrical 

100

A location where two lithosphere plates spread apart 

divergent plate boundary 

100

this is the first layer of the atmosphere this is where we live  

Troposphere 

100

An imaginary line running through the poles of earth is called 

Magnetic poles 

100

A meteoroid that has hit earth's surface.

meteorite

200

 what is the SI unit for electric current 

taking the fixed numerical value of the elementary charge e to be 1.602 176 634 x 10–19 when expressed in the unit C, which is equal to A s, where the second is defined in terms of ΔνCs.

200

 type of plate boundary where two plates  slide past each other 

Transform plate boundary 

200

The second layer of the atmosphere. Jets fly here because there is no weather. The ozone layer is here. 


Stratosphere

200

what causes earths seasons 

 it's rotation 

200

small rocky bodies that move around the Sun mainly between the orbits of Mars and Jupiter

asteroid

300

what is the SI unit for Reactance 

ohm' (volt per ampere)

300

a locations  where two lithosphere plates come together 

Convergent plate boundary 

300

The middle layer of the atmosphere. Meteors are here and there are strong winds

mesosphere 

300

how long does it take the earth to make one rotation on it's axis 

one year

300

  A group of stars that forms a shape or pattern

constellations

400

a difference in electric potential energy between two positions   

voltage 

400

A large continuous mountain range  found within one ocean basin it is the location on the seafloor where magma upwells and forms new seafloor   

 seafloor spreading 

400

It is the fourth layer of the atmosphere. It contains the ionosphere which reflects radio waves back to earth so we can hear the radio.

Thermosphere 

400

earth magnetic field is due to 

the force of the suns magnetic field 

400

areas on the sun's surface that are cooler and less bright than surrounding areas

sunspots

500

the transfer of electrons that occurs when one object rubs on another is called

friction 

500

occur along divergent plate boundaries, where new ocean floor is created as the Earth's tectonic plates spread apart

mid ocean ridge

500

The last layer of the atmosphere. Air molecules are so far apart that spacecrafts are able to fly through it.

  Exosphere

500

one revolution of earth is equal to what time span 

1 decade 

500

large cloud of gas and dust in space where stars can be made

Nebula

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