Description : The bats can fly in the dark because – (1) They can see the objects in darkness (2) They have weak legs and are likely to be attacked by predators (3) They generate flashes of light (4) They generate ultrasonic sound waves
Last Answer : (3) They generate flashes of light
Description : The bats can fly in the dark because (1) they can see the objects in darkness (2) they have weak legs and are likely to be attacked by predators (3) they generate flashes of light (4) they generate ultrasonic sound waves
Last Answer : they generate ultrasonic sound waves
Description : Which phenomenon do bats or dolphins use to find prey, predators or obstacles? (1) Refraction of sound (2) Formation of beats (3) Scattering of sound (4) Echo location
Last Answer : (4) Echo location Explanation: Echolocation, also called biosonar, is the biological sonar used by several kinds of animals. Echolocating animals emit calls out to the environment and ... swiftlets in the genus Aerodramus (formerly Collocalia) and the unrelated Of bird Steatornis caripensis.
Description : Which phenomenon do bats or dolphins use to find prey, predators or obstacles ? (1) Refraction of sound (2) Formation of beats (3) Scattering of sound (4) Echo location
Last Answer : Echo location
Description : Assertion :- The aquatic mammals like Dolphins whales etc. do not contain gill slits. Reason : Their adaptation to aquatic life secondary.
Last Answer : Assertion :- The aquatic mammals like Dolphins whales etc. do not contain gill slits. Reason : Their ... . D. If both Assertion & Reason are false.
Description : Why dolphins and whales do not have gills?
Last Answer : They are not fish. They are mammals and must come up to the surface to breath air using internal lungs (as all mammals do).
Description : Sea turtles, dolphins, and whales all live in the ocean. How do the respiratory systems of these three types of animals limit their behavior?
Last Answer : They must swim to the surface to breathe because their lungs require air and not water.
Description : Which of the following animals are dolphins not closely related to? (a) Whales (b) Porpoises (c) Dugong (d) All of the above
Last Answer : Ans:(b)
Description : Which among these is the correct combination of aquatic mammals? (a) Dolphins, Seals, Trygon (b) Whales, Dolphins, Seals (c) Trygon, Whales, Seals (d) Seals, Dolphins, Sharks
Last Answer : (b) Whales, Dolphins, Seal
Description : Which among these is the correct combination of aquatic mammals ? (1) Dolphins, Seals, Trygon (2) Whales, Dolphins, Seals (3) Trygon, Whales, Seals (4) Seals, Dolphins, Sharks
Last Answer : (2) Whales, Dolphins, Seals
Description : Bats have poor eyesight but are able to home their prey with great accuracy. Also, dolphins can avoid fishing nets and can detect fish at night. Explain
Last Answer : Ans: Bats emit high frequency (1, 20,000 Hz) sound waves and listen with their sensitive ears for any echoes. From the time taken to hear the echo and from the nature of sound received. ... and the type of surroundings. This process is known as echolocation. Same process is used by the dolphins.
Description : Assertion :- All mammals like whales, bats cheetah and human etc. share similarities in the pattern of bonse of forelimbs. Reason :- Eutherians show g
Last Answer : Assertion :- All mammals like whales, bats cheetah and human etc. share similarities in the pattern of ... . D. If both Assertion & Reason are false.
Description : Bats can sense obstacles because they produce – (1) supersonic sound waves (2) ultrasonic sound waves (3) infrasonic sound waves (4) micro sound waves
Last Answer : (2) ultrasonic sound waves Explanation: The reason that bats use ultrasound is because it has such a high frequency and it has a low diffraction or it bends less. They use this sound to do a ... come faster in a particular area than the rest of the sounds then they know that something is near.
Description : Bats can sense obstacles because they produce (1) supersonic sound waves (2) ultrasonic sound waves (3) infrasonic sound waves (4) micro sound waves
Last Answer : ultrasonic sound waves
Description : Do stars emit of reflect light?
Last Answer : They emit their own light.
Description : A black body does not __________ radiation. (A) Absorb or emit (B) Refract (C) Reflect (D) Both (B) & (C)
Last Answer : (D) Both (B) & (C)
Description : The technique used by bats to find their way or to locate food is _______. (1) SONAR (2) RADAR (3) Echolocation (4) Flapping
Last Answer : (3) Echolocation Explanation: Bats use echolocation to navigate and find food in the dark. To echolocate, bats send out sound waves from their mouth or nose. When the sound waves hit an object they produce echoes.
Last Answer : yes
Description : Radioactive elements emit – (1) Radiowaves (2) Infrared waves (3) Ultraviolet waves (4) α, β and γ radiations
Last Answer : (4) α, β and γ radiations Explanation: The phenomenon of spontaneous emission of certain kinds of radiations by some elements is called radioactivity and the elements emitting such radiations are called ... the radioactive substances are separated in to three types, called a, b and g rays.
Description : What do radioactive substances emit? (1) Radio waves (2) Infrared waves (3) Ultraviolet waves (4) α, β and γ rays
Last Answer : (4) α, β and γ rays Explanation: Of the three main types of radiation given off during radioactive decay, two are particles and one is energy; scientists call them alpha, beta and gamma after the first three letters of the Greek alphabet.
Description : Light Emitting Diodes (LED) is used in fancy electronic devices such as toys emit (1) X-rays (2) ultraviolet light (3) (4) All of the above (4) radio waves
Last Answer : (4) All of the above Explanation: A light-emitting diode (LED) is a semiconductor light source that emits light when current flows through it. Infrared LEDs are used in remote-control circuits, such as those used with a wide variety of consumer electronics.
Description : In a Laser (say neon laser) all the atoms emit the light waves of – (1) Same frequency (2) Same amplitude (3) Same phase (4) All of the above
Last Answer : (4) All of the above Explanation: In a Laser all the atoms emit the light waves of same frequency, amplitude and phase. A laser is a device that emits light (electromagnetic radiation) ... photons. The term "laser" originated as an acronym for Light Amplification by Stimulated Emission of Radiation.
Description : In a Laser (say neon laser) all the atoms emit the light waves of (1) Same frequency (2) Same amplitude (3) Same phase (4) All of the above
Last Answer : All of the above
Description : Radar is used for (a) Detecting objects by using light waves (b) Reflecting sound waves to detect objects (c) Determining the presence and location of objects with radio waves (d) Tracking rain-bearing clouds
Description : Remote sensing techniques make use of the properties of ___________ emitted, reflected or diffracted by the sensed objects: (A) Electric waves (B) Sound waves (C) Electromagnetic waves (D) Wind waves
Last Answer : Answer: Option C
Description : What is the technique of detecting the position of objects by producing very high frequency sound waves and listening to the echos?
Last Answer : ANSWER: SONAR
Description : “Sound waves can be used to make objects levitate.”
Last Answer : Levitation of objects using sound has been around for a few years. If you've ever stood in front of a large speaker you'll know that they can pump out what feels like quite a ... air corresponding the wavelength of the sound wave. To levitate something just requires creating a standing wave.
Description : Explain how bats use ultrasonic waves to catch prey. -Science
Last Answer : Bats catch insects with the help of an advanced navigation system known as echolocation. They are known to emit high-frequency ultrasonic waves pitched at 20-100KHz. This is too high for the natural ... . These sounds get reflected when it hits different objects and reverts to the bats as echoes.
Description : Bats can also fly in dark because they are capable of taking the help of _____ A. Ultraviolet Waves B. Ultrasonic Waves C. Electromagnetic Waves D. Special Retina
Last Answer : ANSWER: B
Description : Bats can also fly in dark because they are capable of taking the help of -----? A. Ultraviolet Waves B. Ultrasonic Waves (Answer) C. Electromagnetic Waves D. Special Retina
Last Answer : B. Ultrasonic Waves (Answer)
Description : Bats detect the obstacles in their path by receiving the reflected ______. a) infrasonic waves c) ultrasonic waves b) electromagnetic waves d)radio waves
Last Answer : c) ultrasonic waves
Description : What are every day objects that reflect all the colours in sunlight?
Last Answer : What is the answer ?
Description : Radar is used to (1) locate submerged submarines. (2) receive signal from radio receivers. (3) detect and locate distant objects. (4) locate geostationary satellites.
Last Answer : detect and locate distant objects
Description : Cloudy nights are wanner compared nights, because clouds mainly – (1) Absorb heat from the atmosphere send it towards earth (2) Prevent cold waves from the sky descending on earth (3) Reflect back the heat given by earth (4) Produce heat and radiate it toward earth
Last Answer : (3) Reflect back the heat given by earth Explanation: It is because the night side of Earth will radiate infra-red radiation (heat) back into space. When there is cloud cover, the clouds act like a blanket and trap the heat close to the ground just like a blanket traps heat close to our body.
Description : Cloudy nights are warmer compared nights, because clouds mainly (1) absorb heat from the atmosphere send it towards earth (2) prevent cold waves from the sky descending on earth (3) reflect back the heat given by earth (4) produce heat and radiate it toward earth
Last Answer : reflect back the heat given by earth
Description : Which layer of the earth’s atmosphere reflect back the radio waves to the earth’s surface ? (1) ionosphere (2) stratosphere (3) mesosphere (4) exosphere
Last Answer : ionosphere
Description : What do dolphins, bat and porpoise produce ? a)ultrasound b)infrasound c)both i and ii d)audible sound
Last Answer : a)ultrasound
Description : What waves utilize insects to locate nectar?
Last Answer : ultraviolet
Description : How to interpret a dream, and what it means?
Last Answer : Welcome to fluther. It’s a dream, nothing more. In reall ife, you wouldn’t care what your ex wife thinks. That’s how you know it is dream and nothing more.
Description : hen Pepsi Co takes the information collected through research and attempts to assess and interpret what it means for its soft drink marketing efforts, Pepsi Co is involved in environmental: A)scanning B)forces C)management D)planning E)analysis
Last Answer : E)analysis
Description : What are the materials that reflect sound maximum? Could you mention all the materials used to reflect sound?
Last Answer : Sound reflection is best achieved with smooth, dense, non-porous materials. Sound dampening is best attained by soft, uneven, porous materials.
Description : If you were in a pitch-black dark room with your S/O and some of your closest friends, how could you locate your S/O without using sound or your hands?
Last Answer : My wife has lots of hair, so I guess I’d trip the various people down, take off my shoe, and feel their hair with my foot.
Description : In foggy and hazy environment, birds are able to locate position of sun and their path by means of
Last Answer : In foggy and hazy environment, birds are able to locate position of sun and their path by ... ultra-violet radiations C. magnetic system D. pheromones
Description : An accessibility of 60% means that ________. a. only 60% of customers have an easy time finding a product, talking to a salesperson and taking delivery. b. of the customers who cannot easily locate the product, half will ... c. 40% of customers will not buy the product. d. a and b. e. a and c.
Last Answer : d. a and b.
Description : What are baby dolphins called?
Last Answer : They are called a calf or a pup. Their size is 39-53 inches. They can start to eat fish about 2 month old. They are stay with their mother about 3-6 years.
Description : Dolphins or pandas?
Last Answer : Panda’s what?
Description : Could Dolphins teach us how to communicate with Aliens in the future?
Last Answer : I don’t think the point of the comparison is the sentience of dolphins so much as it is a study in how to communicate with a species with no common frame of reference.
Description : Are you aware of the annual slaughter of the Calderon dolphins in Denmark?
Last Answer : rooeytoo Do you know where the tradition began and if it kept it's original methods? I'm interested in the origins of it. Perhaps I will look some more online. Besides the last sentence I didn't see much to ... they catch or why they do it? It did say that they can't eat the fish because of toxins.