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How many Americans from Apollo missions walked on the moon?
A total of 12. Six manned missions to the lunar surface, with two men on the surface for each one.
How have scientist learned about the material that makes up the moons surface?
Scientists have learned about the material that makes up the moon's surface through the analysis of lunar rock samples brought back by NASA's Apollo missions. They have also used data collected from lunar orbiters, landers, and rovers to study the composition and structure of the moon's surface. Additionally, remote sensing techniques such as spectroscopy have been used to gather information about the composition of the moon's surface.
What did scientists study to develop a model of the Moon's interior structure?
Scientists studied data collected from seismometers left on the Moon's surface by Apollo missions, as well as data from lunar meteorites and satellite missions like the Lunar Reconnaissance Orbiter. By analyzing the Moon's seismic activity and gravitational field, scientists were able to develop a model of the Moon's interior structure, including its core, mantle, and crust.
Which of these probes was the first extensively map the surface of the moon?
The Lunar Orbiter program, launched by NASA in the 1960s, was the first to extensively map the surface of the moon. These missions provided high-resolution photographs of the lunar surface, aiding in the selection of landing sites for the Apollo missions.
What kinds of objects are all over the surface of moon?
The surface of the moon is covered with various objects, including rocks, dust, craters, boulders, and regolith (loose material). Additionally, there may be remnants of spacecraft, equipment, and scientific instruments left behind by human explorations.
What material used to power the seismic equipment left on the lunar surface by the Apollo missions?
The seismic packages were part of the Apollo Lunar Surface Experiment Packages, or ALSEPs. The ALSEPs consisted of a central command box with various experiment arrays extending from that central unit, of which the Passive Lunar Seismic Experiment was one. The ALSEPs were powered by an RTG, or Radioisotope Thermoelectric Generator. RTGs derive their power from the heat created by the decay of plutonium-238. By using thermocouples, the ALSEP RTG's heat is transformed into 70 watts of power. RTGs are still used today (the Mars rover Curiosity uses an RTG for power).
What is the most important consideration when installing playground equipment?
The most important consideration when installing playground equipment is the finishing material.
How can seismic waves be used to help scientists know what type of material each layer of earth is made of?
Seismic Tomography is the most popular technique used to find the Earth's sub-surface characteristics.
Which seismic wave causes damage to da surface?
The surface wave.
What Longitudinal wave that is first to reach the location of an earthquake?
Transverse
What do seismic waves consist of?
Surface Waves
Which type of seismic wave travels on top of Earths surface?
A Surface Wave.
Do seismic waves travel along earths surface?
Yes, Surface waves, a type of seismic wave, travels along the surface, or appears to, as it loses energy exponentially as it goes away from the surface.
Are surface waves the fastest seismic waves?
No, they are in fact the slowest! The fastest seismic waves are P-waves.
What is a seismic crew?
Seismic crews create hundreds of small earthquakes using explosives and other energy sources. These vibrations are precisely measured by specialized equipment to compile a three-dimensional map of the sub-surface rock formations and petroleum reservoirs.
Are surface waves the first to arrive at the seismic facility?
No
Which type of a wave is a surface wave?
a seismic wave
