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PCMS Science Review
sixth grade earth science review
Question | Answer |
---|---|
movement of plates occurs in | mantle |
created in the mantle by heating and cooling of magma | convection currents |
Theory of _______________________ describes plates moving and causing major geological events | Plate Tectonics |
Lithospheric plates are located in | crust and upper mantle |
Continental plates collide they form ___________________. | mountains |
Movement of large blocks of rock and shaking of the Earth | earthquakes |
When two plates pull apart in the ocean, _______________________ occurs. | seafloor-spreading |
Rock closest to a divergent boundary is _____________________ than rock further from the crack. | younger |
breaking down of rock by natural forces such as water, wind and ice. | physical weathering |
breaking down of rock by chemical reactions | chemical weathering |
__________________- is the process that moves sediment from place to place. | Erosion |
Agents of erosion | Water, Wind, Glaciers, Gravity |
rocks formed from cooling of magma and lava | igneous |
rocks formed from heat and pressure | metamorphic |
rocks formed through the processes of WEDCC | sedimentary |
Horizon O is the organic layer containing | humus |
Of the total amount of freshwater, most drinking water comes from | groundwater |
process in water cycle that changes liquid water to water vapor (gas) | evaporation |
process in water cycle that changes water vapor back to water droplets | condensation |
process in water cycle that returns water back to Earth | precipitation |
process in water cycle that involves water evaporating from the pores in plants | transpiration |
Which is closest to the shore at a beach? Continental slope or shelf | continental shelf |
measure of the dissolved salts contained in water | salinity |
Which is more dense, saltwater or freshwater? | saltwater |
Why do hot tropical regions have a higher salinity? | evaporation |
What creates ocean surface currents? | wind and Coriolis Effect |
What creates ocean deep currents | differences in temperature and salinity (density) |
What creates ocean waves? | wind |
What creates tides? | moon andsun's gravitational pull |
The Gulf Stream is a _____________ water current. | warm |
We have the highest tides during what moon phases? | new and full |
Global winds blow in a curved path because of the___________________. | Coriolis Effect |
A continental polar air mass is __________________ and ______________. | cold, dry |
A tropical maritime air mass is ________________ and _______________. | warm, moist |
A swiftly turning, low pressure funnel shaped storm | tornado |
Tornadoes typically form at a _______________ front. | cold |
Area in the US where most tornadoes form in the Spring. | tornado alley |
Hurricanes grow over __________________ ocean water. | warm |
Hurricanes lose their strength once they make __________________. | landfall |
The Moon takes _____________ days to orbit the Earth. | 29.5 |
The takes _______________ weeks to go from a New Moon to a Full Moon. | two |
The Moon is actually lit up by the ___________. | Sun |
If the Moon is in a new moon position a/an _______________ eclipse could occur. | solar |
If the Moon is in a full moon position a/an ______________eclipse could occur. | lunar |
Earth takes _____________ days to orbit the Sun. | 365 |
Earth's tilt and revolution around the Sun creates _______________. | seasons |
Who discovered the Sun was the center of our Solar System? | Copernicus |
Sun-centered theory is called the ___________________ Theory. | Heliocentric |
A "shooting star" | Meteor |
A "Dirty Snowball" | Comet |
A Meteor that actually strikes the earth's surface | meteorite |
____________________ is most like Earth by its size, atmosphere, and weather (rains acid). Earth's "twin sister" | Venus |