Today, astronomers can detect and measure stellar parallax for thousands of the nearest stars, providing us with direct evidence
that Earth really does orbit the Sun. Moreover, as the Parallax Angle animation shows (return to the main "Parallax" screen, and select the "Parallax and Distance" button), these measurements allow us to calculate distances to these relatively nearby stars. If we hope to use parallax to measure distances to even more-distant stars, which of the following telescopes would be most useful? View Available Hint(s)
a. An extremely large telescope built at the best observing site on Earth
b. A larger version of the Hubble Space Telescope, placed in Earth orbit
c. A telescope placed on the same orbit of the Sun as Earth, but on the opposite side of the Sun
d. A telescope that orbits the Sun in the outer solar system
The correct answer is D. A telescope that orbits the Sun in the outer solar system
Explanation:
Today, astronomers can detect and measure stellar parallax for thousands of the nearest stars, providing us with direct evidence that Earth really does orbit the Sun. Moreover, as the Parallax Angle animation shows (return to the main "Parallax" screen, and select the "Parallax and Distance" button), these measurements allow us to calculate distances to these relatively nearby stars. If we hope to use parallax to measure distances to even more-distant stars, the telescope that would be most useful among the telescopes that are given in the option is " A telescope that orbits the Sun in the outer solar system"
B. Geothermal refers to heat sources on the Earth’s crust
Explanation:
The geothermal energy is the heat that is derived from the storing of energy that creates by the earth's temperature and the earth's crust is origin for this type of energy along with the radioactive decay of the elements of the crust.
<u>Thus said to be earth's internal heat and needs to be trapped as it can get lost during the formation stages. </u>
The temperature that occurs at the earth's core and the metal zone reaches up to 4000°C and thus the high temperature causes the rocks to melt and give rise to the temperature in the plastic mantle to get activated by the convection currents that reach the surface.
Some examples of this geothermal energy are those of the hot spring and the rising lava or the magmas.
