Q: Q: What is the state of matter that resembles a gas, but is made of ions, giving it different properties than a typical gas? Read this paragraph and choose the correct option from the provided answers: Plasma is a state of matter that resembles a gas but has certain properties that gases do not have. Like a gas, plasma consists of particles of matter than can pull apart and spread out, so it lacks a fixed volume and a fixed shape. Unlike a gas, plasma can conduct electricity and respond to a magnetic field. That's because plasma consists of electrically charged particles called ions, instead of uncharged particles such as atoms or molecules. This gives plasma other interesting properties as well. For example, plasma glows with colored light when electricity passes through it. You can learn more about plasma at this URL: http://www. youtube. com/watch?v=VkeSI_B5Ljc. Choices: - gamma - vapor - acid - plasma A:
A: plasma

Q: Q: Water droplets form when the air reaches 100-percent what? Read this paragraph and choose the correct option from the provided answers: Water droplets form when the air reaches 100% humidity. If the temperature is cold enough, frost will form. Choices: - density - chance of rain - heat - humidity A:
A: humidity

Q: Q: In an electromagnetic wave, what do the crests and troughs represent? Read this paragraph and choose the correct option from the provided answers: The black line represents the straight path of the light itself. Along this path, there exists an electric field that will reach a maximum positive charge, slowly collapse to zero charge, and then expand to a maximum negative charge. Similarly, there is an changing magnetic field that oscillates from maximum north pole field to maximum south pole field. Along the path of the electromagnetic wave, these changing fields repeat, oscillating over and over again. However, the oscillating electric and magnetic fields demonstrate a weaving pattern that is not the way light travels. For an electromagnetic wave, the crests and troughs represent the oscillating fields, not the path of the light. Choices: - vibrating fields - ocean waves - particles fields - oscillating fields A:
A: oscillating fields

Q: Q: The measure of magnetic fields is named after a serbian physicist. what is his name? Read this paragraph and choose the correct option from the provided answers: For static electric charges, the electromagnetic force is manifested by the Coulomb electric force alone. If charges are moving, an additional force emerges, called magnetism. The century realization that electricity and magnetism are dual aspects of the same force completely changed our understanding of the world we live in. Insights due to Ampere, Gauss, and Maxwell led to the understanding that moving charges electric currents create magnetic fields. Varying magnetic fields create electric fields. Thus a loop of wire in a changing magnetic field will have current induced in it. This is called electromagnetic induction. Magnetic fields are usually denoted by the letter and are measured in Teslas, in honor of the Serbian physicist Nikola Tesla. Choices: - Carl Sagan - Albert Einstein - Niels Bohr - nikola tesla A:
A: nikola tesla