Q: While it seems like all doorbells should be able to withstand varying weather conditions, that's unfortunately not the case. Be sure to choose one that will last throughout the seasons and won't be damaged by fluctuating temperatures, rain, or snow. Look for a bell with packaging that specifically states it is weather-resistant or weatherproof. Because wireless bells use radio waves to transmit the signal, you should pick one that can operate on multiple frequencies. This will ensure that neither your neighbor's wireless doorbell nor their garage door opener signal your own doorbell to chime. If you find that there is interference, simply change the privacy code on the bell to adjust the frequency. The size of your home will determine the range that you'll need. A standard wireless doorbell has a range of 150 feet (46m). If the interior of your home has a distance greater than this, you'll need to choose a bell with a wider range. Interior walls can also interfere with the range of a bell, so take your room configuration into account. If you have your heart set on a certain bell, but the range is insufficient, buy an extender to increase the range so that it can be heard throughout your home. If you have a large home, you may want to place receivers in more than one location. For instance, you may want one on every level of your home, or you may wish to place an additional receiver somewhere where it may be difficult to hear the main receiver, such as the laundry room. Wireless doorbells need a power source, and you have a choice of what kind of source you prefer. If the location you'd like to put the bell and receiver are near outlets, then you can go with an electric bell. If there's not an outlet handy, you may want to choose a battery-operated doorbelljust be sure to stock up on extra batteries and change them out when needed.
A: Pick a doorbell that is heat and water resistant. Choose a doorbell with varying frequencies. Ensure the range is sufficient. Decide how many receivers you would like. Pick between battery-operated or electric power.

Q: A hypothesis is an educated guess about the outcome of an experiment. Discuss the air pockets in the soap and ask your child what they think will happen to the soap when it gets heated. Write down the hypothesis before you begin. Can they think of anything else that expands when heated? For instance, both marshmallows and popcorn expand when you heat them up. Ivory soap is special because it has air whipped into it, but other soaps do not. Perform this same experiment with different types of soap and observe the various results with each brand. Avoid heating the soap for longer than 1 minute, as it could burn. Record your results and observations underneath your written hypothesis. Talk about what happened with the soap. Ask your child why the soap expanded and why the air pockets are important. Explain to them that there is water trapped in the air pockets and that gas expands when it is heated. Gases expand because the molecules begin to move quickly when they are heated. This causes them to bounce off of each other and hit the pockets of soap with such force that they expand out. Discuss the differences between the various brands of soap and the reason you see differences in the results.
A: Talk about a hypothesis. Experiment with different types of soap. Discuss the results.

Q: Physical activity is important not only for losing weight, but also for keeping your bones, muscles, heart, and lungs strong. Try to do 60 minutes of moderate physical activity each day, such as jogging, walking, dancing, swimming, playing tennis, or biking. If you're not used to exercising, start with shorter times and less intense exercise. For example, you might start by walking for 10 minutes each day, then gradually build up to a daily 20-minute fast walk or jog. Depending on your current weight or your fitness goals, you may need to spend more time exercising or do more intense exercise. Talk to your doctor or a PE instructor to find out how much you need to exercise. In addition to aerobic activities that get your heart pumping, like running and biking, you should also do exercises that help you build muscle. At least 3 days a week, add some strengthening exercises to your regular 60 minutes of physical activity. Some good strength-building exercises include doing planks or squats, climbing, and using resistance bands. You can also ask a fitness instructor for advice on how to safely lift weights. Building muscle helps you burn fat more efficiently, and also makes you less prone to injury. In addition to working out, you can also look for little ways to get more physical activity during your daily routines. For example, take the stairs instead of an elevator or escalator whenever you can. Every little bit can make a difference! Doing work around your house and yard can also help you burn calories. Kill 2 birds with 1 stone by cleaning up your room or volunteering to mow the lawn. If you're in school, try walking or biking there if possible. Even standing instead of sitting while you work at a desk can help you burn extra calories! When you have a world of entertainment and information literally at your fingertips, it's easy to forget to get up and move. Make a decision to limit your time on the phone, at your computer or tablet, or in front of the TV. Try setting specific limits for yourself. For example, you might commit to spending no more than 1 hour watching TV per day. If you find yourself too tempted to play on your phone, try installing an app like BreakFree or Moment that will remind you to take breaks or lock you out during designated phone-free times. If you have to sit a lot while you study or work, try to take occasional breaks to get up and walk around or stretch.
A:
Get at least 60 minutes of moderate exercise daily. Incorporate strength training into your exercise regimen. Find ways to be more physically active throughout the day. Minimize screen time and other sedentary activities.