What was the ultimate goal of Prince Henry who achieved it?
Chapter 19
| Question | Answer |
|---|---|
| What was Prince Henry’s goal, and who actually achieved it? | He wanted to explore land, earn wealth, and spread Christianity. Vasco de Gama actually achieved this goal. He ventured far down the coast of Africa until he and his crew reached the tip. |
What did sailors use to navigate?
The earliest navigation methods involved observing landmarks or watching the direction of the sun and stars. Few ancient sailors ventured out into the open sea. Compasses were being used for navigation by the 1100s, and are still the most familiar navigational tools in the world.
What technology allowed Vikings to travel when there wasn’t any wind?
The sun compass, used by a competent navigator, is amazingly efficient, but Norse sailors traveling in the far north latitudes could easily go days, or even weeks, in weather too cloudy to allow the sun to cast a shadow. The Vikings compensated for this with the use of what they called a sunstone.
How did sailors find longitude?
Sailors used a sextant to determine their latitudinal position. Longitude lines run vertically across the globe and are used to measure distances east and west of Greenwich, England. Sailors used the grid formed by latitude and longitude lines to determine their precise position at sea.
How did pirates navigate 400 years ago?
The astrolabe during the time was a multial device that was loved for both its effectiveness in navigation and portability. Pirates could use it to cross the vast Oceans of Earth with the astrolabes. The navigations were possible by using the sun, North Star, and the line on the horizon.
What happens if you put a compass next to a magnet?
The needle of a compass is itself a magnet, and thus the north pole of the magnet always points north, except when it is near a strong magnet. When you take the compass away from the bar magnet, it again points north. So, we can conclude that the north end of a compass is attracted to the south end of a magnet.
What happens when a permanent magnet is kept in contact with an iron nail for many days?
What happens when a permanent magnet is kept in contact with an iron nail for many days? Ans: …… it becomes a magnet for some time i.e it becomes a temporary magnet even after removing a permanent magnet.
What was a compass used for?
A compass is a device that indicates direction. It is one of the most important instruments for navigation. This compass was used by Robert Peary to reach the North Pole, allegedly the first person to do so.