Q: Vibrating electric and magnetic fields make up what kinds of waves? Read this paragraph and choose the correct option from the provided answers: What do these two photos have in common? They both represent electromagnetic waves. These are waves that consist of vibrating electric and magnetic fields. They transmit energy through matter or across space. Some electromagnetic waves are generally harmless. The light we use to see is a good example. Other electromagnetic waves can be very harmful and care must be taken to avoid too much exposure to them. X rays are a familiar example. Why do electromagnetic waves vary in these ways? It depends on their properties. Like other waves, electromagnetic waves have properties of speed, wavelength, and frequency. Choices: - seismic - eletrical - mechanical - electromagnetic A:
electromagnetic

(Question)
Q: What do people apply to their lawns that causes water pollution? Read this paragraph and choose the correct option from the provided answers: People pollute water when they apply excess chemicals to their lawn. They may also dispose of pollutants incorrectly. Choices: - seeds - manure - water - chemicals A:
(Answer)
chemicals

Ques: Q: Many adolescents experience frequent mood swings. name one of the causes for this. Read this paragraph and choose the correct option from the provided answers: Adolescents may have mood swings because of surging hormones. Choices: - maturing nervous system - psychological changes - growing hormones - surging hormones A:
Ans: surging hormones

(Q).
Q: What is the study of how living things interact with each other and with their environment? Read this paragraph and choose the correct option from the provided answers: Ecology is the study of how living things interact with each other and with their environment. Choices: - scientology - biology - geology - ecology A:
(A).
ecology

Ques:Q: All of the land drained by a river system is called its basin, or what "wet" term? Read this paragraph and choose the correct option from the provided answers: All of the land drained by a river system is called its basin, or watershed. One river system's basin is separated from another river system's basin by a divide. The divide is created by the highest points between the two river basins. Precipitation that falls within a river basin always flows toward that river. Precipitation that falls on the other side of the divide flows toward a different river. Choices: - river bank - groundwater - wetlands - watershed A:

Ans:watershed

Question: Q: What is used to classify tornadoes? Read this paragraph and choose the correct option from the provided answers: The winds of a tornado can reach very high speeds. The faster the winds blow, the greater the damage they cause. Wind speed and damage are used to classify tornadoes. Table below shows how. Choices: - seismograph - damage, snowfall - humidity, rain - wind speed, damage A:
Answer:
wind speed, damage