Answer the following question given this paragraph: Sound, like all waves, travels at a certain speed and has the properties of frequency and wavelength. You can observe direct evidence of the speed of sound while watching a fireworks display. The flash of an explosion is seen well before its sound is heard, implying both that sound travels at a finite speed and that it is much slower than light. You can also directly sense the frequency of a sound. Perception of frequency is called pitch. The wavelength of sound is not directly sensed, but indirect evidence is found in the correlation of the size of musical instruments with their pitch. Small instruments, such as a piccolo, typically make high-pitch sounds, while large instruments, such as a tuba, typically make low-pitch sounds. High pitch means small wavelength, and the size of a musical instrument is directly related to the wavelengths of sound it produces. So a small instrument creates short-wavelength sounds. Similar arguments hold that a large instrument creates long-wavelength sounds. The relationship of the speed of sound, its frequency, and wavelength is the same as for all waves:. Q: Sound, like all waves, travels at a certain speed and has the properties of frequency and this? Choices: - gravity - momentum - energy - wavelength A:
wavelength
Answer the following question given this paragraph: All cells, including both plant and animal cells, need energy for processes such as active transport. How do cells obtain the energy they need?. Q: All cells need what for processes like active transport? Choices: - hydrogen - sunlight - oxygen - energy A:
energy
Q: Answer the following question given this paragraph: The nucleolus, which makes ribosomes, is also within the nucleus. Q: The nucleolus, which makes ribosomes, is located within what cell structure? Choices: - mitochondria - Golgi apparatus - epidermis - nucleus A:
A: nucleus
Question: Answer the following question given this paragraph: There are two main types of sedimentary rocks: clastic and chemical. Clastic rocks are made of sediments, which are sometimes called clasts. Creating rocks from sediments is called lithification . Chemicals precipitate from liquid to form chemical sedimentary rocks. Q: What are the two main types of sedimentary rocks? Choices: - sandstone and shale - shale and limestone - basalt and dolomite - clastic and chemical A:
Answer: clastic and chemical
*Question*
Answer the following question given this paragraph: Plants have specialized organs that help them survive and reproduce in a great diversity of habitats. Major organs of most plants include roots, stems, and leaves. Leaves are the keys not only to plant life but to all terrestrial life. The primary role of leaves is to collect sunlight and make food by photosynthesis . Despite the fundamental importance of the work they do, there is great diversity in the leaves of plants. However, given the diversity of habitats in which plants live, it's not surprising that there is no single best way to collect solar energy for photosynthesis. Q: The primary role of leaves is to collect what? Choices: - pollen - insects - precipitation - sunlight A:
**Answer**
sunlight
(Q).
Answer the following question given this paragraph: The depression that allows water to collect to form a lake may come about in a variety of ways. The Great Lakes, for example, are glacial lakes. A glacial lake forms when a glacier scrapes a large hole in the ground. When the glacier melts, the water fills the hole and forms a lake. Over time, water enters the lake from the sources mentioned above as well. Q: What forms when a glacier scrapes a large hole in the ground? Choices: - frozen lake - drift lake - melting lake - glacial lake A:
(A).
glacial lake