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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 |
Created by:
KimberlyCrews