13)Light rays that come in parallel into the front of a telescope are likely to
ID: 288066 • Letter: 1
Question
13)Light rays that come in parallel into the front of a telescope are likely to be coming from what? A) a cloud in the sky B) a large broad object like the oon C) one star D) many stars
14)Saturn’s largest moon, Titan, has a thick hazy atmosphere of air that is thicker than Earth’s air. What is on the surface of that moon? A)volcanos erupting with molten rock B) liquid mathane and ethane C) liquid water D) lots of craters and long cracks
15)Geysers of liquid water burst out of the grooved icy and snowy surface of Saturn’s moon Enceladus. What affect do these geysers have? A) They make the moon spin more quickly B) They alter Satrns surrounding magnetic feild C) They feed material into one of Saturns rings D) They warm up to the temp of the moon
16)Uranus and Neptune have a blue-green color because a type of gas freezes and turns into ice crystals high in these planets’ atmospheres. What gas is turning into ice there? A) Hydrogen B) Mathane C) Ammonia D) Carbon Dioxide
17) Planet Neptune was discovered in 1846, because Neptune’s presence and location were predicted by use of physics equations and study of what phenomenon? Uranus was being magnetically influences by something unsceen B) Uranus was deviating from its expected path C) the solar wing was spreading apart in the part of the solar sysyem D) Light waves are bent in that part of the Solar System
18) Plutos mass was finally calculated in the 1980's when we studies what ? A) The diameter of PLuto B) THe gravitational effects seen at Neptune C) The speed that PLuto orbits the Sun D) the strength of plutos magnetism D) the orbit that its moon Charon Follows
19)What is strange about PLutos orbit around the Sun? A0 it goes backwards around the Sun B) it is further from the Sun than all the planets all the time C) it orbits is more circular than the other planets orbits D) it orbit is tilted compared to the ecliptic plane where the other planets orbit
20)Rris is a dwarf planet. Where does it orbit ? A) Beyond pluto B) in the asteroids belt C) between Saturn and URanus D) Sharing Jupiters orbit
Explanation / Answer
13).
C) one star --The light from the guide-star is collected by the telescope and a wavefront sensor determines the distortion caused by the atmosphere. This information is then fed back to a deformable mirror, or an array of many small mirrors, which compensates for the distortion. As a result, stars located close to the guide-star come into a focus, which is many times better than can be achieved without compensation
14).
B). Liquid methane and ethane--The atmospheric composition in the stratosphere is 98.4% nitrogen—the only dense, nitrogen-rich atmosphere in the Solar System aside from Earth's—with the remaining 1.6% composed of mostly of methane (1.4%) and hydrogen (0.1–0.2%).[11] Because methane condenses out of Titan's atmosphere at high altitudes, its abundance increases as one descends below the tropopause at an altitude of 32 km, leveling off at a value of 4.9% between 8 km and the surface.[11][12] There are trace amounts of other hydrocarbons, such as
ethane, diacetylene, methylacetylene, acetylene and propane, and of other gases, such as cyanoacetylene, hydrogen cyanide, carbon dioxide, carbon monoxide, cyanogen, argon and helium
15).
D) They warm up to the temp of the moon --These tidal forces could be responsible for heating up the interior of the moon, Spencer said. Tidal heating — the distortion of the moon's shape that produces heat through friction — could be a reason for the moon's warm interior, but that only explains part of the heat production.
16).
D) Methane --Methane becomes more dominate and, being a blue gas, the outer Jovian worlds (Uranus and Neptune) go from blue-green to deep blue.
17).
B) Uranus was deviating from its expected path -- By 1847, the planet Uranus had completed nearly one full orbit since its discovery by William Herschel in 1781, and astronomers had detected a series of irregularities in its path that could not be entirely explained by Newton's law of gravitation.
18).
D). The orbit that its moon Charon Follows -- In 1978, the discovery of Pluto's moon Charon allowed the measurement of Pluto's mass for the first time: roughly 0.2% that of Earth, and far too small to account for the discrepancies in the orbit of Uranus
19).
D) it orbit is tilted compared to the ecliptic plane where the other planets orbit --Pluto's Unusual Orbit. It takes 248 Earth years forPluto to complete one orbit around the Sun. Itsorbital path doesn't lie in the same plane as the eight planets, but is inclined at an angle of 17°. Its orbit is also more oval-shaped, or elliptical, than those of the planets.
20).
A) Beyond pluto
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.