https://padlet.com/13jowens_occ/sb4ao2px8w85 Made with a lightning strike of genius en-us 2016-11-29 11:24:18 UTC 2016-12-06 12:28:49 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/Rocket.png 13jowens_occ https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/140454005 Mach is the ratio of the speed of a body to the speed of sound in the surrounding medium.]]> 2016-11-29 11:31:46 UTC https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/140454005 13jowens_occ https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/140454561 Usually when balancing an equation, you count the atoms of each element in the reactants and the products. Use coefficients; place them in front of the compounds as needed.]]> 2016-11-29 11:34:59 UTC https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/140454561 13jowens_occ https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/140456513 Chemical equations use chemical formulas and other symbols instead of words to summarize a reaction.]]> 2016-11-29 11:45:25 UTC https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/140456513 13jowens_occ https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/140457368 Acceleration is the change in the velocity, divided by the time. It has a value and a direction. The direction of the acceleration doesn't have to be the same as the direction of the velocity. The units for acceleration are meters per second squared (m/s2).]]> 2016-11-29 11:49:56 UTC https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/140457368 13jowens_occ https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/140458151 2016-11-29 11:54:18 UTC https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/140458151 13jowens_occ https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/140459842 A catalyst speeds up a reaction by increasing the number of successful particle collisions between reactive substances. In a typical reaction, the majority of particles do not have enough energy to react, and thus they simply bounce off each other. ]]> 2016-11-29 12:05:52 UTC https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/140459842 13jowens_occ https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/140460553 Déjà vu is a feeling of having already experienced the present situation.]]> 2016-11-29 12:10:39 UTC https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/140460553 13jowens_occ https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/140463015 MapMyRun is an application you can download on you're smartphone which enables you to use the built-in GPS of your mobile device to track all of your fitness activities.]]> 2016-11-29 12:23:56 UTC https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/140463015 13jowens_occ https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/140464712 The Space Shuttle Columbia disaster occurred on February 1, 2003, when Columbia fell apart over Texas and Louisiana as it re-entered Earth's atmosphere, killing all seven crew members]]> 2016-11-29 12:33:04 UTC https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/140464712 13jowens_occ https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/141374292 A clear cloudless day-time sky is blue because molecules in the air scatter blue light from the sun more than they scatter red light. ]]> 2016-12-02 13:57:23 UTC https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/141374292 13jowens_occ https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/141377775 Yellow mucus is caused by white blood cells. When your immune system is fighting a cold virus, one of the first symptoms is clear, runny mucus from the nose. As the cold develops, mucus usually becomes thicker and yellow, then green.]]> 2016-12-02 14:07:37 UTC https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/141377775 13jowens_occ https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/141378134 Snow is formed when temperatures are low and there is moisture - in the athmosphere and forms tiny ice crystals. When these tiny ice crystals collide they stick together in clouds to become snowflakes. If enough ice crystals stick together, they'll become heavy enough to fall to the ground.]]> 2016-12-02 14:08:40 UTC https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/141378134 13jowens_occ https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/141381333 This process is called mechanical adhesion. When white glue is inside a bottle, there's not enough air inside the bottle to cause the water to evaporate to make the glue sticky. Basically, the bottle protects the glue from the air and keeps the glue runny.]]> 2016-12-02 14:16:44 UTC https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/141381333 13jowens_occ https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/141385148 Since oil is a lipid, it doesn't freeze in the typical way freezing usually occurs, according to scientists at the University of Illinois. Liids do not freeze, but the molecular movement slows down at colder temperatures.]]> 2016-12-02 14:26:27 UTC https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/141385148 13jowens_occ https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/141737096 Inside an “aerial shell” firework that gets launched into the sky, there's a “bursting charge,” black powder (aka gunpowder) or a black powder substitute and a bunch of small pellets called “pyrotechnic stars.”]]> 2016-12-05 14:12:37 UTC https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/141737096 13jowens_occ https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/141738306 Blood is always red. Veins look blue because light penetrates the skin to illuminate them, blue and red light (being of different wavelengths) penetrate with different degrees of success.]]> 2016-12-05 14:15:33 UTC https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/141738306 13jowens_occ https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/141743903 2016-12-05 14:28:14 UTC https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/141743903 13jowens_occ https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/141747251 Heavier, negatively charged particles sink to the bottom of the cloud. When the positive and negative charges grow large enough, a giant spark - lightning - occurs between the two charges within the cloud. This is like a static electricity sparks you see, but much bigger.]]> 2016-12-05 14:36:00 UTC https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/141747251 13jowens_occ https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/141750790 2016-12-05 14:43:51 UTC https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/141750790 13jowens_occ https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/141752801 Black holes are formed when giant stars explode at the end of their lifecycle. This explosion is called a supernova. If the star has enough mass, it will collapse on itself down to a very small size. Due to its small size and enormous mass, the gravity will be so strong it will absorb light and become a black hole.]]> 2016-12-05 14:48:34 UTC https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/141752801 13jowens_occ https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/141971472 Light travels at a considerably higher speed than sound. Light travels at a constant speed of 186,000 miles per second, but the speed of sound is only 761.2 mph.]]> 2016-12-06 11:26:41 UTC https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/141971472 13jowens_occ https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/141972886 Is when an acid and a base react and salt and water are formed.]]> 2016-12-06 11:36:40 UTC https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/141972886 13jowens_occ https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/141973685 2016-12-06 11:43:19 UTC https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/141973685 13jowens_occ https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/141974295 Titration is the slow addition of one solution of a known concentration to a known volume of another solution of unknown concentration until the reaction reaches neutralization, which is often indicated by a color change.]]> 2016-12-06 11:47:57 UTC https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/141974295 13jowens_occ https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/141976390 Clownfish, moray eels, gobies and other fish species are known to change sex, including reproductive functions. A school of clownfish is always built into a hierarchy with a female fish at the top. When she dies, the most dominant male changes sex and takes her place.]]> 2016-12-06 12:02:55 UTC https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/141976390 13jowens_occ https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/141977119 Evolution is a theory, an idea with lots of evidence. It explains why animals and plants are so good at surviving in their environments, the places where they live. What it means is that a species changes over time and can even split in two new species.]]> 2016-12-06 12:07:31 UTC https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/141977119 13jowens_occ https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/141978211 Hydrogen peroxide is a chemical compound with the formula H2 O2. It is a colourless liquid, slightly more syrupy than water.]]> 2016-12-06 12:15:00 UTC https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/141978211 13jowens_occ https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/141979510 2016-12-06 12:23:30 UTC https://padlet.com/13jowens_occ/sb4ao2px8w85/wish/141979510