In dating a mineral, what is meant by "resetting of the mineral's time clock"?
What will be an ideal response?
Answer: The "time clock" can be reset if the mineral is heated during a metamorphic event. The date obtained from that mineral may be the date of the metamorphic event, not the original age of the mineral.
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Which statement about Pluto is not true?
A) Its surface temperature is very cold. B) It is made mostly of rock and ice. C) It is both smaller and less massive than Earth. D) It is the most massive object in the Kuiper belt. E) It was visited by the New Horizons spacecraft in 2015.
The first Apollo missions to the Moon found the maria to be plains of solid lava
a. True b. False Indicate whether the statement is true or false
A Van de Graaff generator has a spherical dome of radius 50.0 cm. Operating in dry air, where "atmospheric breakdown" is at Emax = 3.0 × 10^6 N/C, what is the maximum charge that can be held on the dome? (ke = 8.99 × 10^9 N/m2/C2)
a. 1.7E–4 C b. 8.3E–5 C c. 4.2E–6 C d. 8.3E–5 C e. 1.7E–6 C
How will high tides differ from their average values when the Moon and the Sun are on the same side of Earth?
A. They will be higher than average. B. They will be lower than average. C. They will not differ from average values significantly. D. There are no high tides when the Moon is near the Sun in the sky.