Education Exams (Educ Gen Sci) – Page 9

#160. According to the law of reflection, from what angle is light coming after it is reflected from a mirror?
A The same angle as the incident ray as measured from the surface of the mirror.
B The same angle as the incident ray as measured from the normal to the mirror.
C Some light comes directly from the object and some passes through the mirror.
D Cannot be determined.
Answer: The same angle as the incident ray as measured from the normal to the mirror.
#161. 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.
#162. 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 Rayleigh Scattering
C Polarization
D Refraction
Answer: Rayleigh Scattering
#163. The polarization behavior of light is BEST explained by considering light to be ________.
A Particles
B Unpolarized
C Longitude waves
D Transverse waves
Answer: Transverse waves
#164. Which type of light vibrates in a variety of planes?
A Electromagnetic
B Unpolarized
C Transverse
D Polarized
Answer: Unpolarized
#165. 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 unpolarized
B It will be entirely blocked
C It will return to its original state
D It will be polarized
Answer: It will be entirely blocked
#166. 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
#167. 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 high frequency and low energy.
B It has a low frequency and can travel through a vacuum.
C It has a low frequency and needs a medium to travel through.
D It has a high frequency and high energy.
Answer: It has a low frequency and can travel through a vacuum.
#168. 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 scattered in all directions by the tiny molecules of air in Earth's atmosphere.
D Red light is scattered in all directions by the tiny molecules of air in Earth's atmosphere.
Answer: Blue light is scattered in all directions by the tiny molecules of air in Earth's atmosphere.
#169. What is the physical evidence that the core is composed mostly of iron?
A Scientist have sampled the core and determined its composition.
B Volcanoes regularly erupt material from the core to the surface.
C The known mass of Earth requires material of high density at the core.
D All of the above
Answer: The known mass of Earth requires material of high density at the core.
#170. Which of the following comprised the largest portion of Earth's volume?
A Mantle
B Outer Core
C Inner core
D Crust
Answer: Mantle
#171. Which of the following statements about the Mohorovicic discontinuity is FALSE?
A The Moho separates the crust from the mantle.
B Seismic wave speeds up as they pass across the Moho heading downward.
C The Moho separates denser rocks below from less dense rocks above.
D The Moho marks the top of a partially molten layer.
Answer: The Moho marks the top of a partially molten layer.
#172. Where do P waves travel the fastest?
A Upper mantle
B Inner core
C Outer core
D Lower mantle
Answer: Lower mantle
#173. What is the driving force for the movement of the lithosphere plates?
A Heat from the sun
B Heat in the atmosphere
C Unequal distribution of heat within the Earth
D Unequal distribution of heat in the oceans
Answer: Unequal distribution of heat within the Earth
#174. Which evidence supports Alfred Wegener's Continental Drift Theory?
A Major rivers on different continents match
B Land bridges still exist that connect major continents
C The same magnetic directions exist on different continents
D Fossils of the same organism have been found on different continents
Answer: Fossils of the same organism have been found on different continents
#175. Which of the following is TRUE based on the Plate Tectonic Theory?
A The atmosphere is strong and rigid
B The atmosphere moves over the lithosphere
C The atmosphere is divided into plates
D The lithosphere is divided into spheres
Answer: The lithosphere is divided into spheres
#176. What type of boundary occurs where two plates move together, causing one plate to descend into the mantle beneath the outer plate?
A Transitional boundary
B Transform fault boundary
C Convergent boundary
D Divergent boundary
Answer: Convergent boundary
#177. Which are considered as most destructive earthquake waves?
A P waves
B Q waves
C Surface waves
D S waves
Answer: Surface waves
#178. In which of the following climates will chemical weathering be most rapid?
A hot and humid
B hot and dry
C cold and dry
D cold and humid
Answer: hot and humid
#179. Which of the following statements about weathering is FALSE?
A The longer a rock is exposed at the surface, the more weathered it becomes.
B Rocks of different compositions weather at different rates.
C Heat and heavy rainfall increase the rate of chemical weathering.
D The presence of soil slows down the weathering of the underlying bedrock
Answer: The presence of soil slows down the weathering of the underlying bedrock