Explain briefly why it is possible to transmit AM radio waves over larger distances at night than during the day.
What will be an ideal response?
Answers may vary.
You might also like to view...
A playa lake usually contains laminated mudstone and evaporite deposits, including rock salt. Indicate whether the statement is true or false
The UN's Human Development Index (HDI) takes into account three factors. These are:
A) A decent standard of living, access to knowledge, and a long and healthy life B) Crude birth rates, crude death rates and the percentage of women in the workforce C) Life expectancy, percentage of population under 15 and the availability of clean drinking water D) Doctor/patient ratio, infant mortality rates and good governance E) Absence of corruption, developed infrastructure and national debt as a ratio of GDP
Sustainable development is often defined as "meeting the needs of current generations without compromising the ability of future generations to meet theirs." Sustainable development is much like:
A. ecocentrism. B. conservationism. C. environmental pragmatism. D. preservationism.
Which type of volcanic rock is associated with a convergent plate boundary?
A. Andesite B. Rhyolite C. Peridotite D. Basalt