Answer: 
Explanation:
The Tropic of Cancer is one of the parallels (imaginary line around the Earth parallel to the equator) located in the northern hemisphere (currently its latitude is
).
It is called "Cancer" because a long time ago, when the summer solstice occurred in the northern hemisphere (on June 20th or 21st), the Sun was in the constellation Cancer (the crab).
Now, if we were just in the North Pole, Polaris would by exactly over our heads (
over the horizon), but as we go south and find the Tropic of Cancer parallel, Polaris altitude will be approximately at an angle of
over the horizon.
Hence, the altitude of Polaris measured by an observer at the Tropic of Cancer is
.
It’s a gulf, a bay is a small body of water between 3 parts of land. Think of the Gulf of Mexico, it is enclosed by three sides of land. Therefore, it is a gulf.
Answer:
A
Explanation:
The great contribution of Tycho Brahe was to observe planetary positions with sufficient accuracy so that Kepler could later use the data to discover the laws of planetary motion.
Tycho Brahe was a danish noblemen and an astronomer his major work was regarding the developing astronomical instrument to study the stars and pave the way for future discoveries.
Answer: B
Thermal Stress will weaken rock formations due to expansion and contraction from temperature changes.