*Question*
Answer the following question given this paragraph: A concave lens is thicker at the edges than it is in the middle. You can see the shape of a concave lens in the Figure below . From the diagram, it's clear that the lens causes rays of light to diverge, or spread apart, as they pass through it. Note that the image formed by a concave lens is on the same side of the lens as the object. It is also smaller than the object and right-side up. However, it isn't a real image. It is a virtual image. Your brain "tricks" you into seeing an image there. The light rays actually pass through the glass to the other side and spread out in all directions. You can explore the formation of images by a concave lens at this URL: http://phet. colorado. edu/sims/geometric-optics/geometric-optics_en. html. Q: A lens of what shape causes rays of light to diverge, or spread apart, as they pass through it? Choices: - convex - flat - elongated - concave A:
**Answer**
concave

*Question*
Answer the following question given this paragraph: In unsaturated fatty acids, there is at least one double bond between carbon atoms. As a result, some carbons are not bonded to as many hydrogen atoms as possible. Unsaturated fatty acids are found in oils. Oils are liquid lipids that plants use to store energy. Q: Oils are liquid lipids that plants use for storage of what? Choices: - fat - glucose - oxygen - energy A:
**Answer**
energy

*Question*
Answer the following question given this paragraph: Mechanical energy is the energy of an object that is moving or has the potential to move. It is the sum of an object's kinetic and potential energy. In Figure below , the basketball has mechanical energy because it is moving. The arrow in the same figure has mechanical energy because it has the potential to move due to the elasticity of the bow. What are some other examples of mechanical energy?. Q: What term describes the energy of an object that is moving or has the potential to move? Choices: - stationary energy - molecular energy - thermal energy - mechanical energy A:
**Answer**
mechanical energy

*Question*
Answer the following question given this paragraph: Q: What is the oxygen-storing protein found in diving mammals' muscles called? Choices: - pigment - hemoglobin - pheromone - myoglobin A:
**Answer**
myoglobin