Earths Magnetic Field
The magnetic field.
Why in the world isnt the sun brighter than what we see?
The compass needle stays oriented in the same direction because it is magnetized with earth's magnetic field. The compass needle will always point to earth's magnetic North Pole.
The important parts of using a compass with a map are knowing the scale, the maps orientation to North, where you are, and where you want to go. With these things you can begin to utilize a compass and a map together. To get one place to another using a compass, you use a target item to walk towards that is in the direction of travel. This allows you to travel distances without looking at the compass constantly.
In Order to read a compass you need to make sure the red needle is facing in front of you. Then you make sure you hold the compass at a comfortable position. If you are looking to go a certain way, turn the dial to help you see the direction you are going.
Diffrent parts of the compass
- Scales ( Helping with maps to tell you how far yu are)
- Base plate ( What the compass sits on for you to hold)
- Direction of travel arrow ( To show wich way is North)
- Magnifier ( To magnify the object infront of you)
- Index pointer( To point to the dial number that you have choosen)
- Dial (Where all the numbers are set and use the Index pointer to keep track of your number)
- Declination marks ( Those are the little numbers inbetween the numbers that are shown)
- Orienting arrow ( The red house where the red needles go)
- Orienting lines ( Helps you orenant the needle to line it up)
- Needle ( The arrows that point to North and South)
- Housing ( Placing th arrows in the little houses that are drawn)
How to use a compass
- Have a starting point!
- Have a destiontion!
- Put dots on the starting and end point onto your map.
- Make a Line with an arrow at the top, place it at the top of the map. Lable that North.
- Draw a scale at the bottom right corner of the map
- Line up the edge of the compass with the line drawn from the starting dot to the destition dot.
- Now you can pick a object to walk to that is going in the same direction.
- Keep repeating step 6 till you reach your destition.
- Repeat all steps to get back to your starting point.
Radio wave, Microwave, and infrared waves
Ever hear of radio waves? A radio wave is about the size of a water bottle ( 19 CM to the size of a mountain.) Scientific uses are, radio satellites, and studying sounds and items in space. Our everday uses are, entertainment, radio, and, T.V. One fun fact is the first radio wave was sent out in 1894.
Can be up to 30 CM to 1 MM in size. The scientific uses are: Weather forcasting, Radar, and study the stars we see today. Our everyday uses are very important, we use this kind of stuff to get us through the day! The uses are: Weather, Cooking food (Heating, microwaves), GPS, and Phones (Texts). If we could see microwaves, the whole sky would light up.
30 CM to 1 MM in size. Scientist all around the world they us this for studying urbanization, vegition, climate, and stars/galexies. Our everyday uses are felt and used: heat, and night vision goggles. A scientist discovered infrared light by studying the temperatures of visible light.
UV Rays and X-rays
Can be up to 400 nm to 10 nm. The sintific uses are to study the ozone, and studying the stars in the universe. Everyday we see this when we get a sun burn, sun tans, and when it hurts your eyes! We can detect that saturn's rings are made of ice and rocks using UV rays. Science can do increadable things!
3 nm to 0.01 nm. This is used to see DNA, and X-rays to see what the body is composed of. Everyday uses are an X-ray. They can be used to see pulsars, black hole, etc. Isnt that amazing what science can do?