Answer the following question given this paragraph: Weather stations contain many instruments for measuring weather conditions. The weather balloon ( Figure above ) will rise into the atmosphere until it bursts. As it rises, it will gather weather data and send it to the surface. Many weather satellites orbit Earth. They constantly collect and transmit weather data from high above the surface. A radar device sends out radio waves in all directions. The waves bounce off water in the atmosphere and then return to the sender. The radar data shows where precipitation is falling. It's raining in the orange-shaded area shown above. Q: When do weather balloons return to earth? Choices: - when the air heats up - when the timer runs out - when the air cools - when it bursts A:
when it bursts
(Question)
Answer the following question given this paragraph: 15.11 Amines: Structures and Names LEARNING OBJECTIVES Identify the general structure for an amine. Identify the functional group for amines. Determine the structural feature that classifies amines as primary, secondary, or tertiary. Use nomenclature systems to name amines. Amines are classified according to the number of carbon atoms bonded directly to the nitrogen atom. A primary (1) amine has one alkyl (or aryl) group on the nitrogen atom, a secondary (2) amine has two, and a tertiary (3) amine has three (http://catalog. flatworldknowledge. com/bookhub/reader/2547. Q: Amines are classified according to the number of carbon atoms bonded directly to what atom? Choices: - helium - oxygen - hydrogen - nitrogen A:
(Answer)
nitrogen
Ques: Answer the following question given this paragraph: 30.5 Transport of Water and Solutes in Plants Water potential () is a measure of the difference in potential energy between a water sample and pure water. The water potential in plant solutions is influenced by solute concentration, pressure, gravity, and matric potential. Water potential and transpiration influence how water is transported through the xylem in plants. These processes are regulated by stomatal opening and closing. Photosynthates (mainly sucrose) move from sources to sinks through the plant's phloem. Sucrose is actively loaded into the sieve-tube elements of the phloem. The increased solute concentration causes water to move by osmosis from the xylem into the phloem. The positive pressure that is produced pushes water and solutes down the pressure gradient. The sucrose is unloaded into the sink, and the water returns to the xylem vessels. Q: Transport of water and solutes in plants water potential is a measure of the difference in potential energy between a water sample and this? Choices: - green water - dirty water - salty water - pure water A:
Ans: pure water
(Q).
Answer the following question given this paragraph: Magnetic Field Produced by a Current-Carrying Solenoid A solenoid is a long coil of wire (with many turns or loops, as opposed to a flat loop). Because of its shape, the field inside a solenoid can be very uniform, and also very strong. The field just outside the coils is nearly zero. Figure 22.40 shows how the field looks and how its direction is given by RHR-2. Q: What current-carrying long coil of wire acts as a magnet? Choices: - converter - antenna - igniter - solenoid A:
(A).
solenoid
Ques:Answer the following question given this paragraph: Electrons have virtually no mass, but protons and neutrons have a lot of mass for their size. As a result, the nucleus has virtually all the mass of an atom. Given its great mass and tiny size, the nucleus is very dense. If an object the size of a penny had the same density as the nucleus of an atom, its mass would be greater than 30 million tons! You can learn more about the size and mass of the nucleus at this URL:. Q: Where does most of the mass for an atom reside? Choices: - electrons - neutrons - protons - nucleus A:

Ans:nucleus
Ques: Answer the following question given this paragraph: Good record keeping is very important in scientific research. Q: Hormones send what through your body? Choices: - nutrients - cells - proteins - signals A:
Ans:
signals