Q: This type of protractor is shaped like half a circle, with angles marked all around the rim. You can buy them anywhere that sells school supplies. Ideally, choose a protractor with a small hole near the center of the protractor, along its straight base. If you don't want to buy one, you can search online for a printable protractor. Print it out, cut it very carefully along its outline, and glue the paper protractor to something a little sturdier, such as construction paper or an index card. Tape a straight, plastic drinking straw on or near the straight edge of the protractor. Make sure the straw passes through the two 0º or zero marks on opposite ends of the straight edge. If you don't have a straw, roll a piece of paper into a tight cylinder and use that instead. Many protractors come with a small hole directly between the 0º marks on the protractor, across from the 90º mark on the curved edge of the protractor. If your protractor does not have a small hole here, or if the hole is not situated correctly, tape or glue the string to the protractor where the hole should be. Make sure the string dangles a few inches (several centimeters) below the protractor. If you are using a paper protractor, you can punch the hole yourself with a sharp pen or hole punch. Do not try to punch a hole in a plastic protractor, as it is probably made from weak plastic and could shatter. Tie a paper clip, metal washer, or other small weight to the end of the string. When you hold the clinometer so the string falls past the circular rim of the protractor, the weight will pull the string straight down past an angle mark on the protractor, such as 60º. This tells you what angle the clinometer is being held at, which can be used to find the heights of distant objects as described in the section below.
A: Find a 180º protractor. Tape a straw along the straight edge. Tie a string through the small hole on the straight edge. Attach a small weight to the dangling end of the string.

Q: You can use a lightweight hardware listing program that is included in many Linux distributions. If you don't have it, it can be easily installed. You can quickly open the terminal in most distributions by pressing Ctrl+Alt+T. Many Linux distributions, including Ubuntu and Mint, include lshw. Use one of the following commands to install lshw. If you already have it, you'll be informed that it's already installed.  Debian - sudo apt-get install lshw  Red Hat/Fedora - sudo yum install lshw Use the following command to cut out most of the clutter and display the items that most people are looking for:  sudo lshw -short. Use the "Class" column to find the item you want. You can find the processor, the memory (RAM), the graphics card ("display"), and disk volumes. This can be useful if someone is helping you troubleshoot, or you want to sell the computer.  Type sudo lshw -short > specs.txt. You can rename the file to whatever you'd like. You'll find the text file in your /home folder. You can also type sudo lshw -html > specs.html. This will create an HTML file that may be easier to read when opened in a web browser. This will allow you to view your hardware in a graphical window that you can navigate through. This can be more comfortable for users coming from Windows or OS X.  Type sudo apt-get install lshw-gtk (Debian) or sudo yum install lshw-gui (RH/Fedora). Type sudo lshw -X to launch the GUI for lshw. The GUI uses the "3-frame" layout. When you expand something in the left frame, the sub sections will appear in the frame to the right. Expand the different categories to find your specs.
A: Open the terminal. Install lshw (if necessary). Run lshw to see a readout of your installed hardware. Find the items your looking for. Create a text file of your hardware specs. Install the GUI (graphical user interface).

Q: When you're out having a good time with your friends, it can be tempting to let your social media followers know what you're up to. However, you should avoid posting your location. Online predators look for this type of information, and you don't want them showing up at your social event. Don't use the “check-in” tool on sites like Facebook or Yelp. Keep your personal details secure. Don't post things like your full name, phone number, e-mail address, or physical address. This will make it much harder for any creeps to track you down.  When you are filling out an online profile, don't feel like you have to complete all fields. Just fill in the parts that you feel comfortable sharing. Use a different screen name. Instead of your actual name, consider using a nickname or pseudonym. You could be “CubsFan29” or “Katie B.” Online predators are great at being sneaky. Today, we're pretty dependent on technology, and a lot of your data is probably digital. In order to keep your information secure, invest in an anti-virus software for your computer. Make sure to use complicated passwords and update them regularly for more protection. Of course it's nice to know that your family is proud of you. But make sure that mom or dad aren't posting a lot of details every time you get a promotion or buy a home. Gently say something like, “I love how enthusiastic you are. But could you not post personal stuff about me online? I try to keep a low profile.” Check in on your loved ones' posts regularly. It's a good idea to keep an eye on any posts that involve you.
A:
Do not “check in” on social media. Refrain from posting personal information. Use anti-virus security. Monitor what your friends and family post.