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Earth&Universe Final
60 Possible Question
| Question | Answer |
|---|---|
| In order to make observations, what must an observer use? | The senses! |
| Define an inference: | An educated guess based upon observation. If it is a thought, then it is a hypothesis or inference! All measurements are observations! |
| If the initial volume of a graduated cylinder is 50ml, and when an object is introduced the water rises to 75ml, calculate the volume of the object. | 75ml - 50ml = 25ml This is the water displacement method. |
| To measure the velocity of water, what instruments does one need? | A ruler for distance and a stop watch for time. |
| If Mr. Hearn actually weighs 185 lbs, but a student estimates that he weighs 175 lbs, how do we set up the formula for a percentage error calculation? | 185 - 175 / 185 X 100 . |
| A black hole has extreme mass in a small volume. What can we say about the density of the black hole? | The density is fantastically high! |
| Can you compare the density of the three states of matter found on Earth? | Solid is most dense, liquid in the middle, and gas is least dense! |
| Compare the density of ice to that of water. Which is more dense, and which is least? | Ice is less dense as it floats in water. Ice is 9% less dense as water expands as it freezes! |
| Convert a barometric pressure of 1020,0 millibars to inches of mercury. | See Earth Science reference tables, page 13 for conversion table. Do it! |
| If a rock floats in water, which is more dense, the water or the rock? | The rock is less dense than the water. |
| If You have 20 pieces of aluminum, the volume and mass may change, but what will happen to density? | The density will remain the same for all pieces regardless of how the volume may change. |
| If you are given a graph with volume on the X axis, and mass on the Y axis, can you calculate the density of the material? | Density = Mass / Volume. All points will be the same density for the same material! |
| Draw a line on a graph that shows density = to 5.0 grams per cubic centimeters. | Volume goes up by ones, mass increases by 2's on the Y axis. Draw it! |
| Water has a density of 1.0 grams per ml. If a block sinks in the water, is the block more or less dense than the water? | Block is more dense, it sinks! |
| If a material is heated and expands, what will happen to the density of the material? | As temperature increases, the density decreases. |
| 28.4 inches of mercury = how many millibars of mercury? | See ESRT, page 13. Do it! |
| Why does the moon seem to change shape in the night sky night after night? | Because the moon revolves ( orbits ) around the Earth. |
| Which geometric shaped model of the Earth ought you to select? | Choose the circle! Earth is almost a perfect sphere. |
| What does the wind vane, thermometer, barometer, and psychrometer measure about weather? | Vane - direction of wind, thermometer - temperature, barometer - air pressure, and psychrometer is relative humidity |
| What is the shape of the Milky Way Galaxy? | Spiral! Spiraling out like a pin wheel. |
| Isolines on a map represent air pressure are called what? | Isolines represent points of equal air pressure. |
| How does light shift so as to support the hypothesis that our universe is expanding? | Red shifting, red run away! Longer or lengthening wave length indicates expanding universe. |
| Name the fuel of the sun and most younger stars. | Hydrogen! The simplest form of matter in the universe. |
| As our sun ages and fusion of hydrogen becomes used up, what element will the sun fuse next as the new, secondary fuel? | Helium, the second simplest form of matter in the universe. |
| Define a supernova: | The massive explosion of a large star that seeds space with complex matter. |
| Our sun is yellow and middle sized. Compare it with a white dwarf star. | White dwarf is hotter as it is white, but it is smaller and dimmer! |
| Can you label the low and high pressure air belts on the Earth? | The equator is low pressure as the hot moist air rises, while it sinks 30 degrees north and south creating high pressure there. 90 degrees high pressure as the air is cold and dry! |
| Can you read latitude and longitude on a map? | Latitude is like the Equator, while longitude is like the Prime Meridian. |
| What type of air mass is generally associated with a hurricane? | Maritime Tropical as it is warm, moist air that drives a hurricane. |
| Can you describe how most hurricanes track across the ocean and approach the United States? | East to west across the Atlantic Ocean, then curling back either into the Gulf of Mexico, or up the East Coast. |
| Surface winds curve dew to what Earth motion? | Earth's rotation causes the apparent curving of winds. |
| How do winds blow around a low pressure air mass? | Counterclockwise and in for a low pressure air mass as they really suck! Like a tornado or hurricane. |
| Why do clouds form? | The warm, moist air is rising, expanding, and cooling, so the vapor condenses to form clouds! |
| Average brightness and temperature stars are dead center in the HR Diagram! | The Sun is near the center of the Main Sequence star classification. It is an average star. |
| How many galaxies are there in the Universe? | Hundreds of billions of galaxies exist beyond our own! |
| Where is the Earth in a model of our Milky Way Galaxy? | It rests about 2 thirds of the way out on one of the arms of stars. Not at the center, and not outside of our Galaxy. |
| Can you draw the arms of the two major fronts in a Mid Latitude Cyclone? | The cold air comes down from Canada, while the warm moist air comes up from the Gulf Of Mexico. |
| Precipitation falls where regarding a cold and warm front? | Behind the cold front, but in front of the warm front!! |
| What weather instrument measures air pressure? | The barometer measures air pressure. |
| How can we locate where the winds are blowing fastest on a map? | Pick the place where the isobars are closest together!! |
| On a hot summer day, will the winds likely blow on or off shore? | Wind will blow from the cold ocean on to the warm land as wind blows from high to low pressure, cold to warm air temperatures. |
Created by:
whearn
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