An alarm is a device or a signal that warns people of something happening that they need to pay attention to, such as a fire, a burglary or just that they need to wake up!
You have two arms, one on each side. They are connected to the rest of your body at your shoulder. Your hands are at the ends of each of your arms.
It is calm weather when there is no wind. In general, something is calm if it is almost still, with very little movement and excitement. The opposite of calm is excited.
A farm is a large area owned by a farmer. On a farm, animals and crops are grown on a big scale. A farmer may have hundreds of acres of wheat and thousands of sheep or cows. Farms are where food is grown for all the people who live in cities all over the world. Farms can have many crops or just one or two. A farmer might have an apple farm, or a chicken farm instead of having lots of different things.