Answer the following question given this paragraph: Joules and calories are the units of energy and heat. Q: Joules and calories are the units of what? Choices: - weight and energy - mass and potential - heat and velocity - energy and heat A:
energy and heat
(Question)
Answer the following question given this paragraph: A meteoroid is dragged toward Earth by gravity and enters the atmosphere. Friction with the atmosphere heats the object quickly, so it starts to vaporize. As it flies through the atmosphere, it leaves a trail of glowing gases. The object is now a meteor. Most meteors vaporize in the atmosphere. They never reach Earth's surface. Large meteoroids may not burn up entirely in the atmosphere. A small core may remain and hit Earth's surface. This is called a meteorite . Q: What causes a meteoroid to vaporize after it enters the atmosphere? Choices: - gravitational pull - atmospheric pressure - spontaneous combustion - friction with atmosphere A:
(Answer)
friction with atmosphere
Ques: Answer the following question given this paragraph: Solutions may be prepared in which a solute concentration exceeds its solubility. Such solutions are said to be supersaturated, and they are interesting examples of nonequilibrium states. For example, the carbonated beverage in an open container that has not yet "gone flat" is supersaturated with carbon dioxide gas; given time, the CO2 concentration will decrease until it reaches its equilibrium value. Q: Solutions that are prepared in which a solute concentration exceeds its solubility are called what? Choices: - solidified - instantiated - mineralized - supersaturated A:
Ans: supersaturated
(Q).
Answer the following question given this paragraph: Other specialized cells are involved in feeding. Sponges are filter feeders. They filter food out of the water as it flows through them. Sponges pump water into their body through specialized pore cells called porocytes. Q: What type of feeders are sponges? Choices: - bottom feeders - surface feeders - layer feeders - filter feeders A:
(A).
filter feeders
Ques:Answer the following question given this paragraph: Figure 28.14 Classically, velocities add like ordinary numbers in one-dimensional motion. Here the girl throws a snowball forward and then backward from a sled. The velocity of the sled relative to the Earth is relative to the Earth is. Q: What determines velocity? Choices: - direction - change in direction - mass per unit - distance over time in a given direction A:

Ans:distance over time in a given direction
Ques: Answer the following question given this paragraph: An ionic bond is the force of attraction that holds together positive and negative ions. It forms when atoms of a metallic element give up electrons to atoms of a nonmetallic element. Q: What is the the force of attraction that holds together ions? Choices: - covalent bond - soluble bond - magnetic bond - ionic bond A:
Ans:
ionic bond