16 Questions
Why are rice hulls and straws burned before planting the next set of crops?
To neutralize acidic soil
What causes acid rain to occur?
Sulfur released in burning fossil fuels combining with water in the atmosphere
Why is integrating nitrogen gas from the atmosphere into the biosphere's nitrogen cycle challenging?
Few organisms can directly utilize atmospheric nitrogen
Which statement about the greenhouse effect is incorrect?
Greenhouse effect leads to cooling of the earth's surface
What is the main difference between earthquake intensity and magnitude?
Intensity is a measure of how much damage an earthquake causes at the surface while magnitude is the strength of the quake.
In comparing the speed of sound in liquids, gases, and solids, where is the speed of sound usually lowest?
Solids
Which has a greater density: a lake full of water or a cupful of water?
They have the same density
Why does a stainless steel spoon feel colder than a plastic spoon?
Stainless steel conducts heat away from the hand faster than plastic does.
In terms of earthquake measurement, what is typically measured with a seismograph?
Energy of the earthquake
What does earthquake intensity measure?
Effects at the earth's surface
Which process would most likely contribute to the formation of fog?
Radiation
What is the primary reason why the sun appears to rise in the east?
The earth rotates from west to east.
If a voltage of 100 volts produces a current of 5 amperes in an electrical device, what is the resistance?
20 Ohms
What effect does freezing water between rock particles have on rocks?
Causes mechanical weathering
Which two familiar names correspond to Amihan and Habagat, known internationally as ______ and ______ respectively?
Northeast and southwest
What would be a likely consequence if grasshopper populations increased?
Bird populations would decline.
Test your knowledge about acid rain and how it affects soil. Identify the causes of acid rain and its impacts on the environment. Learn about the role of burnt rice hulls and straws in neutralizing acidic soil for better crop growth.
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