Answer the following question given this paragraph: The outer ear catches sound waves and funnels them to the middle ear. The middle ear amplifies the sound waves and passes them to the inner ear. The inner ear changes the sound waves to electrical signals. The signals travel to the brain, which interprets the sounds. Q: Which part of the ear amplifies the sound waves? Choices: - eardrum - ear canal - cochlea - middle ear A:
middle ear
Answer the following question given this paragraph: Annelids called polychaete worms live on the ocean floor. They may be filter feeders, predators, or scavengers. The amazing feather duster worm in Figure below is a polychaete that has a fan-like crown of tentacles for filter feeding. Q: Where do polychaete worms live? Choices: - in tide pools - attached to marine life - in coral reefs - the ocean floor A:
the ocean floor
Q: Answer the following question given this paragraph: Examples of Power Examples of power are limited only by the imagination, because there are as many types as there are forms of work and energy. (See Table 7.3 for some examples. ) Sunlight reaching Earth's surface carries a maximum power of about 1.3 kilowatts per square meter (kW/m 2). A tiny fraction of this is retained by Earth over the long term. Our consumption rate of fossil fuels is far greater than the rate at which they are stored, so it is inevitable that they will be depleted. Power implies that energy is transferred, perhaps changing form. It is never possible to change one form completely into another without losing some of it as thermal energy. For example, a 60-W incandescent bulb converts only 5 W of electrical power to light, with 55 W dissipating into thermal energy. Furthermore, the typical electric power plant converts only 35 to 40% of its fuel into electricity. The remainder becomes a huge amount of thermal energy that must be dispersed as heat transfer, as rapidly as it is created. A coal-fired power 6 plant may produce 1000 megawatts; 1 megawatt (MW) is 10 W of electric power. But the power plant consumes chemical energy at a rate of about 2500 MW, creating heat transfer to the surroundings at a rate of 1500 MW. (See Figure 7.25. Q: What does power imply is happening to energy? Choices: - is expanding - being destroyed - being created - being transferred A:
A: being transferred
Question: Answer the following question given this paragraph: Give an example of how matter cycles. While matter cycles round and round in the Earth System, ENERGY FLOWS through the Earth System. The vast majority of Earth's energy comes from the sun, flows into the Earth's System, and flows out of the Earth's System into space. If all the energy that comes to Earth from the sun were to stay on Earth, the Earth would melt away. But the energy that comes to Earth from the sun does not stay. Eventually it radiates back out to space as heat. We know this because the average temperature of the Earth has remained relatively constant. If the energy from the sun were to stay on Earth, the Earth's average temperature would rise. Some of the sun's energy is reflected by the atmosphere, some is absorbed by the Earth and re-radiated as heat, some evaporates water and powers the water cycle, some is captured by plants and used to make sugars, and some powers the wind but eventually ALL of the energy that comes to the Earth from the sun leaves the Earth and flows into space. For this reason we say that energy flows through the Earth System. Q: Where does most of the earth's energy come from? Choices: - magnetic field - its core - its atmosphere - sun A:
Answer: sun
*Question*
Answer the following question given this paragraph: The single-celled prokaryotic organism otherwise known as bacteria. And all it takes is one to quickly grow, under just the right conditions, into millions and billions. Luckily, we know how to control bacteria when necessary. But bacteria do serve many important purposes. In fact, we could not survive without them. Q: What type of organism is a bacteria? Choices: - multicellular organism - fungi - paramecium - single-celled prokaryotic A:
**Answer**
single-celled prokaryotic
Answer the following question given this paragraph: Q: What is the process by which plants make their own food? Choices: - glycolysis - metabolism - cellular respiration - photosynthesis A:
photosynthesis