Check my awnsers fast! Earth Science

1. What does the principle of uniformitarianism tell us about the past? (Points : 5)
The past is the key to the future.

X The present is the key to the past.

Processes at work in the past were very different than those at work today.

The past has no bearing on the future or present.

Question 2. 2. The Atlantic Ocean is expanding. What does this tell us about plates under the Atlantic Ocean? (Points : 5)
X They are being forced downward.
They are being forced apart.
Most likely nothing is happening to the plates.
They are being pressed together.

Question 3. 3. The theory of plate tectonics explains the movement of the plates by convection cells in which of the following layers? (Points : 5)
inner core
outer core
X upper mantle

Question 4. 4. Which of the following may occur as two plates slide past each other? (Points : 5)
X earthquakes
formation of new oceanic crust
mountain building

Question 5. 5. Earthquakes are detected by which of the following? (Points : 5)
Richter scale
global positioning system

Question 6. 6. Which of the following statements about S waves is true? (Points : 5)
S waves arrive at a seismograph station first.
X S waves are also called secondary waves.
S waves travel through solids, liquids, and gases.
S waves move in a pulsating motion.

Question 7. 7. Why is coal not considered a mineral? (Points : 5)
X It is organic.

It does not occur naturally.

It does not have a regular composition.

It is not a solid.

Question 8. 8. In a laboratory, you scratch an unknown mineral on a piece of unglazed porcelain. Which property are you trying to determine? (Points : 5)

Question 9. 9. Which of the following best describes an igneous rock that formed from quickly cooling lava? (Points : 5)
X fine grained
coarse grained

Question 10. 10. How do we classify sedimentary rocks that form from evaporating seawater? (Points : 5)
X chemical

Question 11. 11. How do metamorphic rocks form? (Points : 5)
evaporation of seawater

cooling of magma

Xchange due to heat and pressure

weathering and erosion due to water

Question 12. 12. What must happen to a sedimentary rock if it is to turn into an igneous rock? (Points : 5)
It must melt and then cool again.
It must undergo heat and pressure.
XIt must compact and cement together.
It must break into smaller pieces.

Question 13. 13. Where do hurricanes form? (Points : 5)
X over warm tropical waters
over the Great Lakes
in the upper atmosphere
in thunderstorms

Question 14. 14. The sun’s energy hits earth’s surface at the most direct angle at which of the following locations? (Points : 5)
North Pole
South Pole
X30°N or S latitude

Question 15. 15. What explains why temperature increases with altitude through the stratosphere? (Points : 5)
The stratosphere is closest to the sun.

The air molecules are closer together in the upper stratosphere.

X The ozone layer is found in the stratosphere.

All layers of the atmosphere increase in temperature with altitude.

Question 16. 16. Which gas is the most abundant in earth’s current atmosphere? (Points : 5)

carbon dioxide


X nitrogen

Question 17. 17. In which layer of the atmosphere do most weather patterns occur? (Points : 5)

Question 18. 18. Barometers are used to measure which of the following? (Points : 5)
X atmospheric pressure


wind speed


Question 19. 19. How is heat energy transferred if it has direct contact between a warm object and a cold object? (Points : 5)
the sun

Question 20. 20. The Coriolis effect is caused by which of the following? (Points : 5)
earth’s revolution
radiation from the sun
Xearth’s rotation

Question 21. 21. Which of the following characteristics would cause lava to flow relatively easily? (Points : 5)
high viscosity

Xlow viscosity

high gas

low gas

Question 22. 22. Which of the following statements is most accurate? (Points : 5)
Warm air sinks.
Warm air exerts more pressure on the land than cold air.
X Warm air is most often less dense than cold air.
Warm air is most often denser than cold air.

Question 23. 23. Which of the following best describes the thermosphere? (Points : 5)
Heavier gases such as hydrogen and helium stay at the bottom of the thermosphere.
X Lighter gases such as nitrogen and oxygen rise to the top of the thermosphere.
The thermosphere sits directly below the troposphere.
The atmosphere is so thin that gas molecules rarely contact each other.

Question 24. 24. Tomorrow will be sunny with high clouds. What does this statement describe? (Points : 5)
X the weather in an area
the climate in an area
the air circulation in an area
the jet streams

Question 25. 25. Which of the following is one of the defining features of a hurricane? (Points : 5)
rapid snowfall
X high pressure
funnel cloud
low pressure

Asked Dec 19, 2013

TIP: If it's not your answer to this question, please click "Leave a Comment" button under the question to communicate with the question owner.