What is the recommended amount of physical activity for children Topic test? Kids and teens should get 60 minutes or more of moderate to vigorous physical activity daily. Toddlers and preschool children should play actively several times a day. Toddlers should get at least 60 minutes active play every day and preschoolers should have at […]
Are peppered moths still black?
Are peppered moths still black? By 1970, in some polluted regions nearly 99 percent of peppered moths were now black. Still, scientists were puzzled as to how the black moths first came into being. Until now, that is. Researchers in England have traced the difference between a typica and carbonaria moth to a genetic tweak. […]
Why protein is not a genetic material?
Why protein is not a genetic material? For a material to be genetic material, it has to replicate, it must be stable both structurally and chemically stable. Furthermore, it must be able to provide a scope for mutations eventually, key for evolution. Where are proteins made? Ribosomes Are proteins made in cytoplasm? Proteins all begin […]
What are the reasons for melting of a fuse wire?
What happens to the energy when you place a liquid in the freezer?
What happens to the energy when you place a liquid in the freezer? When water freezes it gives up some of the water’s energy. This energy that is given up is the latent heat of freezing. When the water was freezing latent heat of freezing energy was being released. Energy is being transferred even through […]
Is broccoli a fruit?
Is broccoli a fruit? Vegetable Is an eggplant a berry? Fact: While it’s generally thought of as a vegetable, eggplant is actually a fruit. The eggplant, aubergine, melongene, brinjal or guinea squash is a plant of the family Solanaceae. Eggplant is grown for its usually egg-shaped fleshy fruit and is eaten as a cooked vegetable. […]
What is the SI unit of time?
What is the SI unit of time? second. The second, symbol s, is the SI unit of time. It is defined by taking the fixed numerical value of the cesium frequency ΔνCs, the unperturbed ground-state hyperfine transition frequency of the cesium 133 atom, to be 9 192 631 770 when expressed in the unit Hz, […]
What is binding energy used for?
What is binding energy used for? Binding energy, amount of energy required to separate a particle from a system of particles or to disperse all the particles of the system. Binding energy is especially applicable to subatomic particles in atomic nuclei, to electrons bound to nuclei in atoms, and to atoms and ions bound together […]
Why is there a difference between the core and the outer core?
What are 3 basic characteristics of molecular compounds?
What are 3 basic characteristics of molecular compounds? Physical Properties of Molecular Compounds Property Ionic Compounds Molecular Compounds Physical state at room temperature Solid Gas, liquid, or solid Water solubility Usually high Variable Melting and boiling temperatures Generally high Generally low Electrical conductivity Good when molten or in solution Poor Why do molecular compounds have […]