Is a pencil chemical change? When you sharpen your pencil, you have only caused a physical change. The sharpener has cut off some of the wood and maybe also some of the graphite, but the atoms of the wood and graphite have not changed chemically. Is snow a physical or chemical change? When rain turns […]
What do bacteria use for movement?
What do bacteria use for movement? flagellum What are two foods that bacteria help make? Bacteria are used to make food, such as cheese and yogurt, and they can also help us break down harmful substances in the environment. Scientists created a type of bacteria that could gobble up oil from oil spills. What are […]
What will happen if a bar magnet is broken in two pieces and why?
What will happen if a bar magnet is broken in two pieces and why? If a bar magnet is broken into two pieces, each piece will behave as an individual magnet because the new poles are formed at the broken ends. If these pieces are broken further, the smaller pieces still remains as individual magnets […]
How do we use refraction in everyday life?
How do we use refraction in everyday life? Refraction of light can be seen in many places in our everyday life. It makes objects under a water surface appear closer than they really are. It is what optical lenses are based on, allowing for instruments such as glasses, cameras, binoculars, microscopes, and the human eye. […]
What is the difference between reflective and reflexive?
What is the difference between reflective and reflexive? Reflection might lead to insight about something not noticed in time, pinpointing perhaps when the detail was missed. Reflexivity is finding strategies to question our own attitudes, thought processes, values, assumptions, prejudices and habitual actions, to strive to understand our complex roles in relation to others. What […]
When did the church admit the Earth was round?
When did the church admit the Earth was round? 1633 When was Heliocentrism finally accepted? It was not until the 16th century that a mathematical model of a heliocentric system was presented, by the Renaissance mathematician, astronomer, and Catholic cleric Nicolaus Copernicus, leading to the Copernican Revolution. Did the Catholic Church accept the heliocentric theory? […]
Is the bottom of the wave?
Is the bottom of the wave? The bottom of a wave is called the trough. The distance between two consecutive crests or two consecutive troughs is the wavelength. What happens when a deep water wave starts to feel the bottom? As a deep-water wave reaches shore, at the point where the depth of the water […]
Under which condition is no work done a force pushes an object?
What is Parallax give an everyday example?
What is Parallax give an everyday example? The term “parallax” refers to the apparent movement of objects when viewed from different positions. The everyday example of this is seen driving on the highway– when you look out the window, electrical poles near the road seem to zoom past, while trees in the distance appear to […]
Which Jovian planets have rings?
Which Jovian planets have rings? All Jovian planets have rings: Jupiter: faint, dusty rings. Saturn: bright, spectacular rings. Uranus: dark, thin rings. Neptune: dark, thin rings & ring arcs. How does Jupiter generates its internal heat? Internal Heat The jovian planets get their heat from the Sun and from their interiors. Jupiter creates a lot […]