Answer the following question given this paragraph: Destructive interference in waves occurs when two troughs overlap. Q: Destructive interference in waves occurs when what things overlap? Choices: - two waves - three waves - three troughs - two troughs A:
two troughs
(Question)
Answer the following question given this paragraph: Temperature is the average kinetic energy of the molecules. Q: Temperature can be defined as the average of what type of energy of the molecules? Choices: - magnetic - optical - potential - kinetic A:
(Answer)
kinetic
Ques: 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:
Ans: crests and troughs
(Q).
Answer the following question given this paragraph: The protist wraps around its prey, which is usually bacteria. Q: What is usually the prey of a protist? Choices: - pathogens - algae - proteins - bacteria A:
(A).
bacteria
Ques:Answer the following question given this paragraph: A thermometer is a device used to measure temperature. It is placed in contact with an object and allowed to reach thermal equilibrium with the object (they will have the same temperature). The operation of a thermometer is based on some property, such as volume, that varies with temperature. The most common thermometers contain liquid mercury, or some other liquid, inside a sealed glass tube. The liquid expands and contracts faster than the glass tube. Therefore, when the temperature of the thermometer increases, the liquid volume expands faster than the glass volume, allowing the liquid to rise in the tube. The positions of the liquid in the tube can then be calibrated for accurate temperature readings. Other properties that change with temperature can also be used to make thermometers; liquid crystal colors and electrical conductivity change with temperature, and are also relatively common thermometers. Q: What device is used to measure temperature? Choices: - compass - anemometer - barometer - thermometer A:

Ans:thermometer
Ques: Answer the following question given this paragraph: Living cells need organic molecules, known as nucleic acids . Nucleic acids are molecules that store genetic information. They pass that genetic information to the next generation. Deoxyribonucleic acid (DNA) is the nucleic acid that carries information for nearly all living cells today. DNA has done this for most of Earth's history. Ribonucleic acid (RNA) delivers genetic instructions to the location in a cell where protein is synthesized. RNA regulates protein synthesis. Some scientists think that RNA was the first replicating molecule. Q: Name the two types of nucleic acids. Choices: - isoleucin and leucine - dna ( trigraph acid ) and rna ( ribonucleic acid ) - lysine and methionine - dna (deoxyribonucleic acid) and rna (ribonucleic acid) A:
Ans:
dna (deoxyribonucleic acid) and rna (ribonucleic acid)