Answer the following question given this paragraph: A transverse wave is characterized by the high and low points reached by particles of the medium as the wave passes through. The high points are called crests, and the low points are called troughs. You can see both in the Figure below . Q: What are the high points in a transverse wave called? Choices: - apex - peaks - waves - crests A:
crests
Answer the following question given this paragraph: Only radioactive isotopes have half-lives. Q: The first law of thermodynamics deals with the total amount of energy in what? Choices: - organism - springs - galaxy - universe A:
universe
Q: Answer the following question given this paragraph: Photosynthesis occurs in the chloroplast, an organelle specific to plant cells. Q: Which organelle specific to plant cells is responsible for photosynthesis? Choices: - the mitochondria - the vacuole - the lipid - the chloroplast A:
A: the chloroplast
Question: Answer the following question given this paragraph: Earth's crust contains a lot of oxygen. The oxygen can combine with other elements to create oxide minerals. Oxides contain one or two metal elements combined with oxygen. Oxides are different from silicates, because they do not contain silicon. Many important metals are found as oxides. For example, hematite and magnetite are both oxides that contain iron. Hematite (Fe 2 O 3 ) has a ratio of two iron atoms to three oxygen atoms. Magnetite (Fe 3 O 4 ) has a ratio of three iron atoms to four oxygen atoms. Notice that the word "magnetite" contains the word "magnet. " Magnetite ( Figure below ) is a magnetic mineral. Q: What layer of earth contains abundant oxygen, which can combine with other elements to create oxide minerals? Choices: - the core - the surface - the tectonic plates - the crust A:
Answer: the crust
*Question*
Answer the following question given this paragraph: For all collisions in a closed system, momentum is conserved. In some collisions in a closed system, kinetic energy is conserved. When both momentum and kinetic energy are conserved, the collision is called an elastic collision. Most collisions are inelastic because some amount of kinetic energy is converted to potential energy, usually by raising one of the objects higher (increasing gravitation PE) or by flexing the object. Any denting or other changing of shape by one of the objects will also be accompanied by a loss of kinetic energy. The only commonly seen elastic collisions are those between billiard balls or ball bearings, because these balls do not compress. And, of course, collisions between molecules are elastic if no damage is done to the molecules. Q: When both momentum and kinetic energy are conserved in a closed system, the collision is called what? Choices: - a static collision - a spontaneous collision - an accidental collision - an elastic collision A:
**Answer**
an elastic collision
*Question*
Answer the following question given this paragraph: A surface wave is a wave that travels along the surface of a medium. The medium is the matter through which the wave travels. Ocean waves are the best-known examples of surface waves. They travel on the surface of the water between the ocean and the air. Q: What is the general name for a wave that travels along the surface of a medium? Choices: - stack wave - speed wave - light wave - surface wave A:
**Answer**
surface wave