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7th Grade Sci Final

Part I

What is Physical Weathering? Weathering from water, wind, sun, temperature, and ice.
What is Chemical Weathering? Weathering from chemicals like acids.
What measures Air Pressure? A Barometer.
What measures wind speed? An Anemometer.
What measures Temperature? A Thermometer.
What kind of weather does Cold Fronts bring? Rain Storms
What does conduction occur in? (Solid, Liquid, or Gas) Solids
What does Convection occur in? (Solid, Liquid, or Gas) Gases and Liquids.
What is Humidity? Amount of Moisture in the air.
Why does Earth have seasons? The Earth's axis is tilted
What are Meteors? A small, rapidly moving meteor burning up on entering the earth's atmosphere.
What are Meteorites? A meteor that survives its passage through the earth's atmosphere such that part of it strikes the ground. More than 90 percent of meteorites are of rock, while the remainder consist wholly or partly of iron and nickel.
What are Comets? A comet is an icy body that releases gas or dust
What are the differences between Weathering and Erosion? The primary difference between weathering and erosion is that weathering occurs in place whereas erosion involves movement to a new location. Both are caused by similar factors of wind, water, ice, temperature, and even biological action.
What are all rocks made of? Minerals
What causes Earthquakes? Earthquakes are caused when tectonic plates of the Earth's crust move against each other causing a disturbance.
Density is calculated by? Dividing mass by volume
What is a compound? A combination of 2 or more elements.
What is the difference between Revolution and Rotation? When an object turns around an internal axis (like the Earth turns around its axis) it is called a rotation. When an object circles an external axis (like the Earth circles the sun) it is called a revolution.
Mass is? Amount of matter in an object.
Matter is? Matter is anything that has mass and takes up space.
Volume is? Volume refers to the amount of space the object takes up.
Where do Convection Currents occur? Mantle
Spheres of Earth: Atmosphere is composed of ______. Hydrosphere is composed of _______. Lithosphere is composed of _______. Spheres of Earth: Atmosphere is composed of GAS. Hydrosphere is composed of WATER. Lithosphere is composed of ROCK.
What is an inference? Provide an example. An inference is an idea or conclusion that's drawn from evidence and reasoning. An example is: There are dark clouds in the sky. It will probably rain.
What causes Volcanic Eruptions? Magma rises through cracks or weaknesses in the Earth's crust. When this pressure is released, a result of plate movement, magma explodes to the surface causing a volcanic eruption.
How do we classify rocks? Depending on how the rock formed
Maritime Air mass: Forms over water near equator. What are the Conditions? Warm, Moist
Continental Air mass: Forms on Land and near arctic. What are the conditions? Cold, Dry
USA Weather moves in what direction to what direction? West to East.
Why does the sun appear larger in the sky compared to other stars? The Sun looks bigger because it is closer to us than the stars.
In what direction does the sun rise? East
What causes Earth Quakes? Earthquakes are usually caused when rock underground suddenly breaks along a fault.
What determines Earth's Time Zone? Rotation
Which rock is most likely to contain fossils? Sedimentary
By studying Earthquake Waves, we have learned about... The Earth's Layers
How long does it take the Earth to orbit the sun? 1 Year
How long does it take for the Moon to orbit Earth? 1 Month
What is condensation? The change from a gas to liquid.