Time Clocks, in those days, were worked by a pendulum. How would this affect time keeping on a ship? • Sailors often used an hourglass to measure time. It took one hour for the • sand to go from the top to the bottom. • Think of another way of calculating time without using a modern clock and describe it. • What are the problems of this way of time keeping? Direction As you saw in the film, explorers of this era did have compasses to show direction. A compass works because it has a carefully balanced magnet inside which turns easily. In which direction does the magnet point on a compass? • N Label the points of the compass for yourself. • Make your own compass. You will need a bowl of water, a big needle, a flat piece of wood or cork and a magnet. After making sure that the needle sticks to the magnet, rub the needle against it. The needle now will have been turned into another small magnet. Place your cork or wood onto the water. Before doing it, say what you think will happen when you put the needle on • top of the cork. Do it. What did happen? • How can you check that your compass is working properly? • lJse a modern compass to help you to answer these questions. 1. If you face North and turn 1350 clockwise, in which direction are you now facing? 2. If you face East and turn 900 clockwise, in which direction are you now facing? 3. Walk onto the playground and face North East. What can you see directly in front of you? 4. Stand in the middle of the playground. In which direction will you have to travel to get back into your classroom? Position Since early times people have drawn imaginary lines over the world to help locate places. Complete this sentence: The lines across the world which are drawn level with the equator are called lines of and the lines which go through the North and South Poles are called lines of .
Time Clocks, in those days, were worked by a pendulum. • How would this affect time keeping on a ship? • Sailors often used an hourglass to measure time. It took one hour for the sand to go from the top to the bottom. • Think of another way of calculating time without using a modern clock and describe it. • What are the problems of this way of time keeping? Direction As you saw in the film, explorers of this era did have compasses to show direction. A compass works because it has a carefully balanced magnet inside which turns easily. • In which direction does the magnet point on a compass? • Label the points of the compass for yourself. N Make your own compass. You will need a bowl of water, a big needle, a flat piece of wood or cork and a magnet. After making sure that the needle sticks to the magnet, rub the needle against it. The needle now will have been turned into another small magnet. Place your cork or wood onto the water. • Before doing it, say what you think will happen when you put the needle on top of the cork. • Do it. What did happen? • How can you check that your compass is working properly? lJse a modern compass to help you to answer these questions. 1. If you face North and turn 1350 clockwise, in which direction are you now facing? 2. If you face East and turn 900 clockwise, in which direction are you now facing? 3. Walk onto the playground and face North East. What can you see directly in front of you? 4. Stand in the middle of the playground. In which direction will you have to travel to get back into your classroom? Position Since early times people have drawn imaginary lines over the world to help locate places. Complete this sentence: The lines across the world which are drawn level with the equator are called lines of and the lines which go through the North and South Poles are called lines of .
pocahontas_analysis_bonus.docx