| altitude |
the height of a thing above earth or above sea level. |
| battery |
a device that makes electricity by using chemical reactions. Batteries are used to power many things, including cars, flashlights, toys, and watches. |
| blackmail |
money demanded from someone by another person who threatens to give out information that would harm that person. |
| confusion |
the state of not understanding clearly or of being mixed up. |
| continent |
one of the earth's seven major areas of land. The continents are Africa, Antarctica, Asia, Australia, Europe, North America, and South America. |
| decrease |
to become less or smaller. |
| display |
anything put out in order to be seen by others. |
| frontier |
a border between two countries, or the area nearby on either side. |
| hygiene |
the practice of keeping clean to stay healthy and prevent disease. |
| impostor |
a person who cheats or tricks others by pretending to be another person. |
| invasion |
an act or instance of invading by an enemy or hostile army. |
| leisure |
freedom from work or other duties that take time and effort; free time. |
| pad |
a piece of soft material used as cushioning for protection or comfort. |
| repetition |
the act or process of doing or saying again. |
| scoop |
a tool with a short handle attached to a deep, curved bowl, used to take up food or grain. |