Q: This prank involves transmitting spooky sounds to a place of your choosing, to scare people of your choosing. You don’t need much for this — just your voice, a spooky setting, and a baby monitor set (transmitter and receiver). You could do this to your friends, family, or even your kids, if you have them and are confident it won’t scar them for life. Think about where it would be really frightening to hear scary voices coming from. Imagine what would terrify you if you were alone at night and began to hear frightening noises.  What if you heard frightening noises coming from under your bed? Would this scare you? What if you heard noises coming from your closet, or maybe the bathroom down the hall? You could even do this outside at night if you’re camping, but it might be a bit more tricky! Make some noises into the transmitter to get a sense of how you sound. You might try out different creepy voices to see what works best. You’ll be speaking into the transmitter (the unit a parent would leave next to the baby to monitor it), and the sounds you make will come out of the speaker (the unit the parent would normally have).  Possible locations for the speaker include under the bed, in the closet, in the bathtub behind the shower curtain, or anywhere else where you’re planning to have the scary noises come from. Be sure that no one catches you hiding the speaker, and that it’s well-hidden, or the prank will be over. Remember that at night, the speaker’s light might glow in the dark, so you’ll want to make sure it’s properly hidden. Make sure the speaker is on and that the batteries are well charged when you hide it. Make sure the transmitter is off until you’re ready to use it, otherwise every sound you make will be transmitted to the place where you’ve hidden the speaker! This prank works best at nighttime when it’s dark and quiet, and everyone has gone to bed but isn’t yet asleep. Whispers are a great way to start, and are especially frightening when they build up into a loud exclamation.  Example: “Where is she where is she where is she I know she was here I know it I saw her … [pause and then loudly whisper the person you’re pranking’s name while smiling] … yes that’s her name, that’s her — Shhh shhh shhhhhh. I think she hears us!” Then be quiet for a few moments, then shout “LET ME OUT!” then start whining or crying, or laughing maniacally. Ideally you don’t want to stop until you can hear the person freaking out. If you’re trying to scare children, keep it tame — for example, “What’s that smell? What’s that smell? I smell smelly feet … they make me hungry, I’m going to EAT THEM!” If you’re too far from the speaker, your voice might not transmit to it clearly. If you’re unsure of the transmission distance, double-check the instructions for your baby monitor set. You can also do this prank without the monitor, just by hiding beneath someone’s bed, in their closet etc. The thing is, it’s scarier if they see you before they go to bed — that way they won’t expect that you're in the room trying to scare them.
A: Gather your materials. Choose your victims. Choose your setting. Test the transmitter and speaker. Hide the speaker unit of the baby monitor in a place of your choosing. Keep the transmitter off until you’re ready to use it. Wait until it’s dark. Sit somewhere far away from the speaker and begin. Make sure you’re not too far from the speaker. Do it without the monitor.

Q: These are considered to be clouds that are between 19,500 feet (5,943 meters) and 42,500 feet (12,954 meters). This encompasses cirrus, cirrostratus and cirrocumulus clouds. These clouds tend to be frozen (filled with ice crystals) and have blurry outlines; they are generally thin and wispy to the human eye.   Contrails from jet airplanes are also found at this level in the Earth's atmosphere. High clouds produce beautiful red, orange and yellow colors in the sky at sunrise and sunset. Rings of light around the moon or the sun are caused by cirrus clouds. A halo around the sun or moon can suggest rain or snow on the way, especially if accompanied by thickening lower clouds. Cirrus clouds often partially obscure the sun. Cirrus clouds are distinguishable by their thin, white and wispy appearance. They generally reach an altitude above 20,000 feet (6,000 meters). The thinness tends to be due to the frigid winds in the upper atmosphere. Cirrus clouds are made up of ice crystals formed by supercooled water droplets.  Cirrus clouds that are sparse and stay that way usually show signs of fair weather. When cirrus clouds change into cirrostratus clouds, wind and precipitation are probably on their way within the next 24-36 hours. Cirrus indicates moisture above; if cirrus changes to altostratus and then stratus, a storm approaches soon. You'll see cirrus clouds as a warm front advances. The direction in which cirrus clouds move will usually tell you the direction of air movement, namely the weather coming your way. Cirrus clouds are sometimes referred to as horse's or mare's tails because they curl out like a horse's tail. These clouds are often found in rows and they look like little puffed-up ripples. Some people think these clouds look like fish scales. The broken or rippled nature of these clouds is caused by air turbulence; it's bad news for anyone flying through them, but great news on the ground because these clouds usually mean that the weather is going to stay the same with no major sudden changes. These clouds tend to lack shape and have a hazy appearance. They usually spread across much of the sky. They suggest moisture is present in a large part of the sky, indicating that rain might be due soon. Thicker cirrostratus clouds can come from the top of an advancing storm system. Cirrostratus clouds are made up of ice crystals as well, but unlike cirrus clouds they can cover the entire sky and be up to several-thousand feet thick. Cirrostratus clouds are sheetlike and nearly transparent. Although these are machine made by jet airplanes, contrails can help you to know the weather in the heights above. Contrails are condensation, formed when the jet's warm exhaust mixes with the very cool air surrounding the jet in the upper atmosphere.  If the contrail disappears quickly, or you see a jet with no contrail, this means that the upper atmosphere you're observing is dry. On a lovely day, you can usually take this as a sign that the weather is going to remain fine for a while. On the other hand, if the contrail is obvious for a time, is long and spreads, the upper atmosphere you're observing is wet. Grab your coat and umbrella because the weather will probably change soon, if it hasn't already.
A:
Look for high altitude clouds (also known simply as "high clouds"). Know your cirrus cloud. Spot a cirrocumulus cloud. Look for cirrostratus clouds. Learn how to tell the difference between cirrus clouds and cirrostratus clouds. Watch for contrails.