How to do a simple electrophoretic activity
How to make a simple weather station
With a weather station you can measure weather events such as temperature changes, rain and wind speed. Building a weather station can a be fun and easy activity for the whole family. All you need is a couple simple Materials, and you'll be able to predict the next weather activity like a meteorologist.
Get a journal where you can record all of the measurements from your weather equipment. Record the information at the same time each day so that you can record patterns.
Measure the temperature with a thermometer that you need to buy.
Measure precipitation with a rain gauge. Make a rain gauge by taping a ruler to the side of a glass or mug. You can also use a large measuring cup with the dimensions already printed. Make sure the rain gauge is protected from the wind.
Measure the air pressure with a barometer. Make a barometer with a clear glass, a straw, a ruler, and some rubber. Fill the glass halfway with water. Glue the ruler to the inside of the glass. Next, glue the straw to the ruler about ½ inch from the bottom of the glass. Chew the gum, then suck in water halfway up the straw. You can keep the water in place by sealing the top of the straw with the soft rubber. Mark the tip of the water level on the straw with permanent marker. The water in the tube will rise and fall due to the air pressure on the water in the glass. As the weight of the atmosphere on the water in the glass increases, more water is forced into the pipe, causing the water level to rise. The movement of the water level in the straw can be measured.
Measure the wind direction with a weather vane that you can buy or make. To make a weather vane, cut out the shapes of an arrowhead and a tail from the construction paper, then glue them to the ends of a straw. Push a pen through the center of the straw from above and insert that pen into the eraser of a pencil. Make sure the straw can move freely with the pen. Set the pencil tip in clay so that it stands upright.
Measure humidity in the air (humidity) with a hygrometer. Cut a piece of plastic into a triangle. Glue a dime on it, near the pointer. Pierce a nail through it near the base. Wiggle the nail so that the pointer moves loosely around it. Glue a strand of hair between the pennies and the nail hole. Put the pointer on a piece of wood about three-quarters of the way down. Attach the nail to the wood, making sure that the pointer can rotate easily around the nail. Attach a second nail to the base 1 inch from the top and line it up with the pointer. Pull the strand of hair tight so that the pointer is parallel to the floor. Now glue the end of the hair onto the nail. When the air is dry, the hairs shorten and the pointer points up. To calibrate the hygrometer, put a teaspoon of salt in a small glass jar and add enough water to steam the salt. Put this container together with the hygrometer in a large zippered bag. Let it sit for 6 hours and check the reading without opening the bag. It should be 75 percent to be precise.
Measure the wind speed with an anemometer. Take five plastic cups and poke a straw-sized hole through four to make sure the holes line up. Stick a pencil through the bottom of the fifth cup, in the middle. Glue a straw through two cups at a time, forming two pairs. These straws will also cross the fifth cup in the middle. Put the bottom of the pen in clay or something sturdy to hold it in place.
Place your weather station in a location with little sunlight. You do not want to expose the thermometer to direct sunlight or other weather conditions. Make sure you can see every device recording your measurements. Place all equipment in an area that is not showing a lot of activity.
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