Q: Telescopes use which kind of lenses to enlarge images? Read this paragraph and choose the correct option from the provided answers: Like microscopes, telescopes use convex lenses to make enlarged images. However, telescopes make enlarged images of objectssuch as distant starsthat only appear tiny because they are very far away. There are two basic types of telescopes: reflecting telescopes and refracting telescopes. The two types are compared in the Figure below . They differ in how they collect light, but both use convex lenses to form enlarged images. You can learn more about telescopes and how they evolved in the video at this URL:. Choices: - crystalline - spherical - concave - convex A:
convex

Q: Early in the development of a human fetus, the skeleton is made entirely of what? Read this paragraph and choose the correct option from the provided answers: Early in the development of a human fetus, the skeleton is made entirely of cartilage. The relatively soft cartilage gradually changes to hard bone through ossification. This is a process in which mineral deposits replace cartilage in bone. At birth, several areas of cartilage remain, including the ends of the long bones in the arms and legs. This allows these bones to keep growing in length during childhood. Choices: - bones - anterior - membrane - cartilage A:
cartilage

Q: When solids change to gasses, they generally pass through what other state? Read this paragraph and choose the correct option from the provided answers: Solids that change to gases generally first pass through the liquid state. However, sometimes solids change directly to gases and skip the liquid state. The reverse can also occur. Sometimes gases change directly to solids. Choices: - chemical - frozen - carbon - liquid A:
liquid

Q: What type of generators use electromagnetic induction to change kinetic energy to electrical energy? Read this paragraph and choose the correct option from the provided answers: Two important devices depend on electromagnetic induction: electric generators and electric transformers. Both devices play critical roles in producing and regulating the electric current we depend on in our daily lives. Electric generators use electromagnetic induction to change kinetic energy to electrical energy. They produce electricity in power plants. Electric transformers use electromagnetic induction to change the voltage of electric current. Some transformers increase voltage and other decrease voltage. Choices: - conductors - radiators - thermal generators - electric generators A:
electric generators