Answer: Noise is the unpleasant and undesirable sound which leads to discomfort in human beings. The intensity of sound is measured in decibels... View Article
Answer: The wind is an air movement having both direction and speed. It is made up of gusts and eddies that can only be felt and not seen,... View Article
Answer: (b) west to east Sun appears to move from east to west around the earth which means the earth is rotating in the opposite direction. The... View Article
Answer: (a) less than that of Neptune. We know that the time period is directly proportional to the distance from the sun. In order of distance... View Article
Answer: The frying pan will vibrate. We will not be able to hear the sound of vibration because sound cannot travel in a vacuum. Sound needs a... View Article
Answer: Life may no longer exist because some special environmental conditions are needed for the existence and continuation of life on the... View Article
Answer: As the moon does not emit its own light and reflects the light of the sun. phases are seen. Because of the revolution of the earth, the... View Article
Answer: An earthquake is the shaking of the Earth's surface caused by a sudden release of energy in the Earth's crust, which causes seismic... View Article
Answer: Given 1/3 × (6 × 4/3) = (1/3 × 6) × 4/3 In this case, the way factors are arranged in a multiplication issue apparently has no effect... View Article
Answer: We cannot predict whether the object is charged or not if aluminium strips are replaced with plastic strips, as there will be no... View Article
Answer: The angle of reflection is equal to the angle of incidence. Since Angle of incident ray+ Angle of reflected ray is 60°. The angle of... View Article
Answer: The average weather taken over a long time is called climate. Cloudy, sunny, rainy, stormy, or clear weather all are possibilities. It is... View Article
Answer: It's possible that the bulb isn't glowing for the following reasons: It's possible that the liquid isn't conducting. The circuit is... View Article
Answer: (b) N2 The chemical formula of Nitrogen is N but Nitrogen exist in the molecule of two ions hence the chemical symbol of Nitrogen gas is... View Article
Answer: The decaying leaves and animal droppings in a forest enrich the soil. Forests help purify and increase the oxygen content in the air by... View Article
Answer: The image generated by a plane mirror is the same distance behind the mirror as the object in front of it.∴ Object distance from... View Article
