Both transverse and longitudinal waves are produced when an earthquake occurs
Indicate whether the statement is true or false
TRUE
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The hotter an object, the more blue it appears
Indicate whether the statement is true or false
Earth satellites are typically more than 100 km high so as to be above Earth's
A) atmosphere. B) gravitational field. C) both of these
The average rate of erosion on the Moon is far less than on Earth because
A) the crust of the Moon is much denser than the Earth's crust. B) the Moon is much younger than the Earth. C) the Moon lacks wind, water and an atmosphere. D) the Moon's magnetic field protects it from the solar wind better than ours does. E) the Moon's mare long ago dried up, so there is no more wave erosion there.
In the fission reaction 235U + 1n ? 141Ba + 92Kr + neutrons, the number of neutrons produced is
A) 0. B) 4. C) 1. D) 3. E) 2.