Q: What is measured by the intensity of the sound waves? Read this paragraph and choose the correct option from the provided answers: Loudness refers to how loud or soft a sound seems to a listener. The loudness of sound is determined, in turn, by the intensity of the sound waves. Intensity is a measure of the amount of energy in sound waves. The unit of intensity is the decibel (dB) . Choices: - inputs - tone - pitch - loudness A:
loudness

Q: What structure connects the pharynx to the trachea? Read this paragraph and choose the correct option from the provided answers: Larynx The larynx is a cartilaginous structure inferior to the laryngopharynx that connects the pharynx to the trachea and helps regulate the volume of air that enters and leaves the lungs (Figure 22.7). The structure of the larynx is formed by several pieces of cartilage. Three large cartilage piecesthe thyroid cartilage (anterior), epiglottis (superior), and cricoid cartilage (inferior)form the major structure of the larynx. The thyroid cartilage is the largest piece of cartilage that makes up the larynx. The thyroid cartilage consists of the laryngeal prominence, or "Adam's apple," which tends to be more prominent in males. The thick cricoid cartilage forms a ring, with a wide posterior region and a thinner anterior region. Three smaller,. Choices: - thyroid - aorta - sternum - larynx A:
larynx

Q: Population size influences the chances of a species surviving, with very small populations generally at greatest risk of what fate? Read this paragraph and choose the correct option from the provided answers: Population size is the number of individuals in a population. For example, a population of insects might consist of 100 individual insects, or many more. Population size influences the chances of a species surviving or going extinct. Generally, very small populations are at greatest risk of extinction. However, the size of a population may be less important than its density. Choices: - adaptation - accumulation - mutation - extinction A:
extinction

Q: Electromagnetic waves are comprised of what two types of energy? Read this paragraph and choose the correct option from the provided answers: Gamma rays are electromagnetic waves. Electromagnetic waves are waves of electric and magnetic energy that travel through space at the speed of light. The energy travels in tiny "packets" of energy, called photons. Photons of gamma energy are called gamma particles. Other electromagnetic waves include microwaves, light rays, and X rays. Gamma rays have the greatest amount of energy of all electromagnetic waves. You can learn more about gamma radiation at this URL: http://www. youtube. com/watch?v=okyynBaSOtA. Choices: - solar and kinetic - kinetic and electric - magnetic and gravitational - electric and magnetic A:
electric and magnetic