Answer the following question given this paragraph: Sperm are released from the body during ejaculation . Ejaculation occurs when muscle contractions propel sperm from the epididymis. The sperm are forced through the ducts and out of the body through the urethra. As sperm travel through the ducts, they mix with fluids from the glands to form semen. Hundreds of millions of sperm are released with each ejaculation. Q: What is released from the body during ejaculation? Choices: - saliva - urine - blood - sperm A:
sperm

Answer the following question given this paragraph: Convex lenses are thicker in the middle than at the edges. They cause rays of light to converge, or meet, at a point called the focus (F). Convex lenses form either real or virtual images. It depends on how close an object is to the lens relative to the focus. Figure below shows how a convex lens works. You can also interact with an animated convex lens at the URL below. An example of a convex lens is a hand lens. Q: Convex lenses are thicker in the middle than at the edges so they cause rays of light to converge, or meet, at a point called what? Choices: - the center - the base - the apex - focus A:
focus

Answer the following question given this paragraph: Did you ever see a scene like the one in Figure below ? In many parts of the world, trees lose their leaves in autumn. The leaves turn color and then fall from the trees to the ground. As the leaves are falling, they have kinetic energy. While they are still attached to the trees they also have energy, but it's not because of motion. Instead, they have stored energy, called potential energy . An object has potential energy because of its position or shape. For example leaves on trees have potential energy because they could fall due to the pull of gravity. Q: What is another term for stored energy? Choices: - inertia - mechanical energy - latency - potential energy A:
potential energy