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Astronomy Chp 5

QuestionAnswer
What causes the Earth’s spherical shape? earth's gravity
What causes the Earth’s equatorial bulge? earth's rotation
The Earth’s radius is approximately 4 times larger than the Moon’s. Which of the following statements correctly compares the volume of the Earth to the volume of the Moon? earth's volume is abot 64 times larger
Which following provides significant information about the composition of the Earth’s interior? analysis of density and study of seismic waves
Which of the following is true about ozone? consists of 3 atoms of oxygen, absorbs UV radiation, most abundant in thin atmospheric layer
Which of the following is the most abundant gas in the Earth’s atmosphere? nitrogen
Which of the following demonstrates that the Earth spins around an axis? coriolis effect
Can seismic waves travel through solids, liquids or both? only solids
What is the origin of oxygen gas in the Earth’s atmosphere? photosynthesis
What is the mechanism that produces the Earth’s magnetic field? Earth's rotation and convection currents in the core
Which of the following result from the Coriolis effect? tradewinds, gulf stream, jet streams, weather patterns
What causes precession? gravitational interaction of the Sun and Moon
Which of the following are possible explanations for the high temperature of the Earth’s core? decay of radioactive material & material accumulated to form the Earth
What is the origin of the Earth’s atmosphere? gases released by volcanic eruptions & matter brought by comets
T/F It protects the Earth from energetic particles emitted by the Sun. true
t/f It is due to the combined effect of the Earth’s rotation and convection currents in the molten core. true
t/f The interaction of the magnetic field charged particles from the Sun creates the aurora. true
The average density of the Earth is about 5.5 g/cm3 yet most of the rocks on the Earth’s surface are about 3 g/cm3. What could we conclude from this comparison? The Earth’s interior must have material with density higher than 5.5 g/cm3.
The Earth’s equatorial diameter is slightly larger than the diameter through the poles. The difference in diameters causes gravity to be ______________ at the poles stronger
______ is the most abundant element in the Earth’s crust. oxygen
type of seismic waves that can travel through liquids and solids P
type of seismic waves that can only travel through solids S
The average density of the Earth is ____. 5.5 grams per centimeter cubed
Scientists refer to the Earth as a differentiated planet because ______. because the material in the interior of the Earth are separated by density
The ______ are two doughnut-shaped rings of charged particles trapped by the Earth’s magnetic field Van Allen radiation belts
The probable cause of Van Allen radiation belts is ___________. the Earth’s magnetic field
The probable cause of Precession is ___________. equatorial bulge
The probable cause of high pressure in the core is ___________. the Earth’s gravity
The probable cause of spherical shape is ___________. the Earth’s gravity
Where on Earth would silicates most likely be found? crust
Where on Earth would an aurora most likely be found? Around magnetic poles
Where on Earth would volcanoes most likely be found? crust
Where on Earth would the largest radius most likely be found? equator
Where on Earth would lower surface gravity most likely be found? equator
Which property goes with the Ozone? absorbs UV light
Which property goes with ammonia and methane in the atmosphere? absorbs UV light
Where is liquid water abundant in the crust
Where is radioactive heating abundant? in the core
Which of the following methods is used to determine age of the Earth? Radioactive decay
Which of the following is caused by Earth’s rotation? Coriolis effect
Which of the following causes precession of the Earth’s axis? equatorial bulge
Which of the following causes the trade winds? Coriolis effect
Which of the following may be a source of heat in the Earth’s interior? radioactive decay
Created by: edeboo
 

 



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