Q: What is the upward force exerted by fluids when any object, such as a boat, is placed in it? Read this paragraph and choose the correct option from the provided answers: Objects such as ships may float in a fluid like water because of buoyant force. This is an upward force that a fluid exerts on any object that is placed in it. Archimedes discovered that the buoyant force acting on an object equals the weight of the fluid displaced by the object. This is known as Archimedes' law (or Archimedes' principle). For an entertaining video presentation of Archimedes' law, go to this URL:. Choices: - human force - atomic force - impetuous force - bouyant force A:
bouyant force

Q: What do you call a lens that causes the light rays to bend away from its axis? Read this paragraph and choose the correct option from the provided answers: A lens that causes the light rays to bend away from its axis is called a diverging lens. Ray tracing is the technique of graphically determining the paths that light rays take. The image in which light rays from one point on the object actually cross at the location of the image and can be projected onto a screen, a piece of film, or the retina of an eye is called a real image. Thin lens equations are. Choices: - optical lens - axilens - converging lens - diverging lens A:
diverging lens

Q: Compared to red light, blue light has a shorter what? Read this paragraph and choose the correct option from the provided answers: Blue light has a shorter wavelength than red light. Which color has the higher frequency? Which moves faster in a vacuum?. Choices: - gravity - life span - absorption - wavelength A:
wavelength

Q: Rapidly produced genetic vairants are found in organisms with what type of generation time? Read this paragraph and choose the correct option from the provided answers: Choices: - long - repeating - oscillating - short A:
short