Answer the following question given this paragraph: The sun and other stars produce light because they are so hot. They glow with light due to their extremely high temperatures. This way of producing light is called incandescence . Some objects produce light without becoming very hot. They generate light through chemical reactions or other processes. Producing light without heat is called luminescence . Objects that produce light by luminescence are said to be luminous. Luminescence, in turn, can occur in different ways:. Q: Producing light without heat is called what? Choices: - osmosis - thermoluminescence - bioluminescence - luminescence A:
luminescence
(Question)
Answer the following question given this paragraph: The energy of motion is kinetic energy, KE. Whenever an object is in motion it has kinetic energy. The faster it is going, the more energy it has. Q: What is the term for the energy of motion, which is exhibited by the speed of an object? Choices: - inertia - mechanical energy - residual energy - kinetic energy A:
(Answer)
kinetic energy
Ques: Answer the following question given this paragraph: Types of chemical reactions include synthesis, decomposition, replacement, and combustion reactions. Q: Synthesis, decomposition, replacement, and combustion are all types of what reaction? Choices: - natural - toxic - mineral - chemical A:
Ans: chemical
(Q).
Answer the following question given this paragraph: Conduction from the core heats the lower mantle. Q: Conduction from the core has what effect on the lower mantle? Choices: - it vibrates it - it makes it rotate - it cools it - it heats it A:
(A).
it heats it
Ques:Answer the following question given this paragraph: Unsaturated hydrocarbons contain at least one double or triple bond between carbon atoms. As a result, the carbon atoms are unable to bond with as many hydrogen atoms as they would if they were joined only by single bonds. This makes them unsaturated with hydrogen. Unsaturated hydrocarbons are classified on the basis of their bonds as alkenes, alkynes, or aromatic hydrocarbons. Q: What type of hydrocarbons contain at least one double or triple bond between carbon atoms? Choices: - ionic - catalytic - saturated - unsaturated A:

Ans:unsaturated
Answer the following question given this paragraph: In a transverse wave, such as a wave in a rope, the medium vibrates at right angles to the direction that the wave travels. The high points of transverse waves are called crests, and the low points are called troughs. Q: What do you call the high and low points of transverse waves? Choices: - echos and troughs - waves and troughs - bands and troughs - crests and troughs A:
crests and troughs