Education Exams (Educ Gen Sci) – Page 4

#60. Which of the following is the BEST description of a white light?
A It is a pure color that cannot be broken up.
B It is a mixture of red, blue and yellow.
C It is a mixture of every color.
D It is a mixture of seven colors.
Answer: It is a mixture of every color.
#61. Sunsets often appear to have a more reddish-orange color than moon. Which of the following phenomenon is responsible for this effect?
A Dispersion
B Polarization
C Rayleigh Scattering
D Refraction
Answer: Rayleigh Scattering
#62. The polarization behavior of light is BEST explained by considering light to be ________.
A Particles
B Longitude waves
C Transverse waves
D Unpolarized
Answer: Transverse waves
#63. Which type of light vibrates in a variety of planes?
A Electromagnetic
B Polarized
C Transverse
D Unpolarized
Answer: Unpolarized
#64. Light is passed through a filter whose transmission axis is alighned horizontally. It then passes through a second filter whose transmission axis is aligned vertically. What will happen to the light after passing through both filters?
A It will be polarized
B It will be unpolarized
C It will be entirely blocked
D It will return to its original state
Answer: It will be entirely blocked
#65. Light rays enter a material and scatter. Which BEST describes what happens to the light rays.
A Bounce straight back
B Move straight through
C Spread out in all directions
D Move through but in a new direction
Answer: Spread out in all directions
#66. The energy generated by the sun travels to Earth as electromagnetic waves of varying lengths. Which statement correctly describes an electromagnetic wave with a long wavelength?
A It has a low frequency and needs a medium to travel through.
B It has a high frequency and low energy.
C It has a low frequency and can travel through a vacuum.
D It has a high frequency and high energy.
Answer: It has a low frequency and can travel through a vacuum.
#67. Why is the sky blue?
A It reflects the color of the ocean.
B The color of the outer space is blue.
C Blue light is more readily scattered than red light by nitrogen
D Red light is scattered more easily than blue light by dust p
Answer: Blue light is more readily scattered than red light by nitrogen
#68. What is the physical evidence that the core is composed mostly of iron?
A Volcanoes regularly erupt material from the core to the surface.
B Scientist have sampled the core and determined its composition.
C The known mass of Earth requires material of high density at the core.
D A and B
Answer: The known mass of Earth requires material of high density at the core.
#69. Which of the following comprised the largest portion of Earth's volume?
A Crust
B Outer Core
C Mantle
D Inner core
Answer: Mantle
#70. Which of the following statements about the Mohorovicic discontinuity is FALSE?
A Seismic wave speeds up as they pass across the Moho heading downward.
B The Moho separates denser rocks below from less dense rocks above.
C The Moho marks the top of a partially molten layer.
D The Moho separates the crust from the mantle.
Answer: The Moho marks the top of a partially molten layer.
#71. Where do P waves travel the fastest?
A Inner core
B Upper mantle
C Lower mantle
D Outer core
Answer: Lower mantle
#72. What is the driving force for the movement of the lithosphere plates?
A Heat in the atmosphere
B Heat from the sun
C Unequal distribution of heat within the Earth
D Unequal distribution of heat in the oceans
Answer: Unequal distribution of heat within the Earth
#73. Which evidence supports Alfred Wegener's Continental Drift Theory?
A Land bridges still exist that connect major continents
B The same magnetic directions exist on different continents
C Fossils of the same organism have been found on different continents
D Major rivers on different continents match
Answer: Fossils of the same organism have been found on different continents
#74. Which of the following is TRUE based on the Plate Tectonic Theory?
A The atmosphere is divided into plates
B The atmosphere moves over the lithosphere
C The lithosphere is divided into spheres
D The atmosphere is strong and rigid
Answer: The lithosphere is divided into spheres
#75. What type of boundary occurs where two plates move together, causing one plate to descend into the mantle beneath the outer plate?
A Transform fault boundary
B Divergent boundary
C Convergent boundary
D Transitional boundary
Answer: Convergent boundary
#76. Which are considered as most destructive earthquake waves?
A P waves
B S waves
C Q waves
D Surface waves
Answer: Surface waves
#77. In which of the following climates will chemical weathering be most rapid?
A cold and dry
B hot and humid
C hot and dry
D cold and humid
Answer: hot and humid
#78. Which of the following statements about weathering is FALSE?
A Heat and heavy rainfall increase the rate of chemical weathering.
B The longer a rock is exposed at the surface, the more weathered it becomes.
C The presence of soil slows down the weathering of the underlying bedrock.
D Rocks of different compositions weather at different rates.
Answer: The presence of soil slows down the weathering of the underlying bedrock.
#79. Why do agricultural areas often experience the greatest amount of soil erosion?
A Because farms are typically located near streams
B Because they typically occur in areas of moderately steep slopes
C Because farming usually involves plowing the soil to plant seeds
D Because farmers usually remove trees from their fields
Answer: Because farming usually involves plowing the soil to plant seeds