Education Exams (Educ Gen Sci) – Page 5

#80. What can happen to global temperatures for several years after a volcanic eruption?
A Temperatures may increase
B Temperatures may decrease
C Temperatures can create more volcanoes
D Temperatures are not affected by volcanic eruption
Answer: Temperatures may decrease
#81. Which of the following correctly describe diastrophism?
A It refers to the boundaries between crustal plates.
B It refers to all processes in which magma moves from Earth's surface or near the surface.
C It refers to all the deformation of Earth's crust by bending or breaking in response to great pressures exerted either from below or from within the crust.
D It refers to a discredit theory of continent formation.
Answer: It refers to all the deformation of Earth's crust by bending or breaking in response to great pressures exerted either from below or from within the crust.
#82. What is the evaporation of water from plant surfaces especially through stomates?
A Perspiration
B Respiration
C Transpiration
D Condensation
Answer: Transpiration
#83. Which of the following processes form clouds?
A Precipitation
B Transpiration
C Evaporation
D Condensation
Answer: Condensation
#84. Which of the following is/are a natural factors that may disrupt the water cycle?
A Water pollution
B Human intervention
C Drying of ground water
D Mismanaged domestic and industrial use of water
Answer: Drying of ground water
#85. What is the mixture of fresh and saltwater typically formed where rivers meet the ocean?
A Saline water
B Mixture water
C Brackish water
D Compound water
Answer: Brackish water
#86. Fresh water is an integral part of hydrologic cycle. How is it produced?
A Evaporation
B Desalination
C Transpiration
D Condensation
Answer: Desalination
#87. Which of the following is included in the term hydrosphere?
A All the fresh water on the planet.
B All the water on the planet.
C All waters on the surface of the continents.
D All the liquid water on the Earth, minus the ice
Answer: All the water on the planet.
#88. What is the main difference between swamps and marshes?
A Salt water versus fresh water
B Trees versus grassland
C High water table versus low
D Seasonality of precipitation
Answer: Trees versus grassland
#89. A lake will become saline if ________.
A precipitation exceeds evaporation
B evaporation exceeds precipitation
C the lake has no natural drainage outlet
D lake levels decrease
Answer: the lake has no natural drainage outlet
#90. What is the other name for typhoon?
A Tornado
B Hurricane
C Twister
D Low pressure area
Answer: Hurricane
#91. What is the difference among typhoon, a hurricane, and a cyclone?
A While typhoons are strong storms, cyclones are worse, and hurricane are the strongest of all.
B Hurricanes spin clockwise, cyclones spin counter clockwise, and typhoons are actually tidal waves.
C The storms are the same but the names are used in the Western Pacific, North America and Indian Ocean, respectively.
D Typhoons are found near the equator, hurricanes in the midlatitudes and typhoons in the arctic and antartic.
Answer: The storms are the same but the names are used in the Western Pacific, North America and Indian Ocean, respectively.
#92. What is a closed, continuous path through which electrons can flow?
A Resistor
B Charge
C Circuit
D Voltage
Answer: Circuit
#93. What will be your charge if you scrape electrons from your feet while scuffing across the rug?
A Neutral
B Negative
C Positive
D Both positive and negative
Answer: Positive
#94. How will your force change if the distance between the two charged spheres is doubled?
A The force is doubled
B The force is quadrupled
C The force is tripled
D The force is multiplied eight times
Answer: The force is quadrupled
#95. A 6 ohm and 12 ohm resistors are connected in parallel with each other to a battery. Which of the following is TRUE?
A The current flowing through the resistors is the same.
B The potential difference across the two resistors is the same.
C The resistor values must be equal for the circuit to work.
D More current will flow through the 20 ohm resistor.
Answer: The potential difference across the two resistors is the same.
#96. A new 1.5 V dry cell furnishes 30 A when short circuited. Find the internal resistance of the cell.
A 0.10 ohm
B 1.5 ohm
C 30 ohm
D 0.05 ohm
Answer: 0.05 ohm
#97. If three identical lamps are connected in parallel to a 6 V dry cell, what is the voltage drop across each lamp?
A 2 V
B 3 V
C 6 V
D 18 V
Answer: 6 V
#98. Which of the following describes an electric current?
A Regulates the movement of electric charge.
B The opposition a material offers to the electron flow.
C The movement of charged particles in a specific direction.
D The electric pressure that causes charged particles to flow.
Answer: The movement of charged particles in a specific direction.
#99. A 10 W bulb and a 20 W bulb are connected in a series circuit. Which bulb has the more current flowing in it?
A The 20 W bulb
B The 10 W bulb
C Both bulbs have the same current
D Cannot be determined
Answer: Both bulbs have the same current