Answer the following question given this paragraph: Halkieria, or scale worms, are an example of a fossil life from the Cambrian. Q: What is another term for scale worms? Choices: - trichina - wormidanopis - spirogyra - halkieria A:
halkieria
Answer the following question given this paragraph: Most waves approach the shore at an angle. The part of the wave that is nearer the shore reaches shallow water sooner than the part that is farther out. The shallow part of the wave "feels" the bottom first. This slows down the inshore part of the wave and makes the wave "bend. " This bending is called refraction . Q: What three characteristics do waves have? Choices: - structure , refraction and deflection - theory , refraction and deflection - spin, refraction, and deflection - reflection, refraction and deflection A:
reflection, refraction and deflection
Q: Answer the following question given this paragraph: For the hydrogen atom, there is no problem since there is only one electron in the H atom. However, when we get to helium we see that the first three quantum numbers for the two electrons are the same: same energy level, same spherical shape. What differentiates the two helium electrons is their spin. One of the electrons has spin while the other electron has spin. So the two electrons in the 1s orbital are each unique and distinct from one another because their spins are different. This observation leads to the Pauli exclusion principle , which states that no two electrons in an atom can have the same set of four quantum numbers. The energy of the electron is specified by the principal, angular momentum, and magnetic quantum numbers. If those three numbers are identical for two electrons, the spin numbers must be different in order for the two electrons to be differentiated from one another. The two values of the spin quantum number allow each orbital to hold two electrons. The figure below shows how the electrons are indicated in a diagram. Q: How many electrons are in the hydrogen atom? Choices: - five - two - three - one A:
A: one
Question: Answer the following question given this paragraph: The most powerful or influential individual in a group is sometimes called dominant. In genetics, a dominant trait means nearly the same thing. A dominant trait is the most influential trait and masks the other trait. Q: The most powerful or influential individual in a group is sometimes called what? Choices: - superior - gamma - beta - dominant A:
Answer: dominant
*Question*
Answer the following question given this paragraph: When current flows in just one direction, it is called direct current (DC) . The current that flows through a battery-powered flashlight is direct current. Q: When current flows in just one direction, what is it called? Choices: - mono-current - reactant current - alternating current - direct current A:
**Answer**
direct current
*Question*
Answer the following question given this paragraph: In some species, the same individual produces both sperm and eggs. But worms mate to exchange sperm, rather than self-fertilizing their own eggs. Fertilized eggs are deposited in a mucous cocoon. Offspring emerge from the cocoon looking like small adults. They grow to adult size without going through a larval stage. Q: Worms grow to adult size without going through what stage? Choices: - egg - development - growth - larval A:
**Answer**
larval