Podcast
Questions and Answers
Why are rice hulls and straws burned before planting the next set of crops?
Why are rice hulls and straws burned before planting the next set of crops?
- To deplete the soil of nutrients
- To increase the pH of the soil
- To neutralize acidic soil (correct)
- To reduce soil erosion
What causes acid rain to occur?
What causes acid rain to occur?
- Sulfur released in burning fossil fuels combining with water in the atmosphere (correct)
- Excess hydrogen being released into the atmosphere to produce acids
- Evaporation of phosphorus-rich water forming phosphoric acid
- Carbon dioxide combining with water in the atmosphere
Why is integrating nitrogen gas from the atmosphere into the biosphere's nitrogen cycle challenging?
Why is integrating nitrogen gas from the atmosphere into the biosphere's nitrogen cycle challenging?
- Nitrogen is very abundant in the atmosphere
- Oceans quickly absorb nitrogen gas
- Few organisms can directly utilize atmospheric nitrogen (correct)
- Living organisms quickly absorb nitrogen gas
Which statement about the greenhouse effect is incorrect?
Which statement about the greenhouse effect is incorrect?
What is the main difference between earthquake intensity and magnitude?
What is the main difference between earthquake intensity and magnitude?
In comparing the speed of sound in liquids, gases, and solids, where is the speed of sound usually lowest?
In comparing the speed of sound in liquids, gases, and solids, where is the speed of sound usually lowest?
Which has a greater density: a lake full of water or a cupful of water?
Which has a greater density: a lake full of water or a cupful of water?
Why does a stainless steel spoon feel colder than a plastic spoon?
Why does a stainless steel spoon feel colder than a plastic spoon?
In terms of earthquake measurement, what is typically measured with a seismograph?
In terms of earthquake measurement, what is typically measured with a seismograph?
What does earthquake intensity measure?
What does earthquake intensity measure?
Which process would most likely contribute to the formation of fog?
Which process would most likely contribute to the formation of fog?
What is the primary reason why the sun appears to rise in the east?
What is the primary reason why the sun appears to rise in the east?
If a voltage of 100 volts produces a current of 5 amperes in an electrical device, what is the resistance?
If a voltage of 100 volts produces a current of 5 amperes in an electrical device, what is the resistance?
What effect does freezing water between rock particles have on rocks?
What effect does freezing water between rock particles have on rocks?
Which two familiar names correspond to Amihan and Habagat, known internationally as ______ and ______ respectively?
Which two familiar names correspond to Amihan and Habagat, known internationally as ______ and ______ respectively?
What would be a likely consequence if grasshopper populations increased?
What would be a likely consequence if grasshopper populations increased?
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