My Ty Science term 1 by Aisling https://padlet.com/13ablakemore_occ/e18u40regvm8 en-us 2016-11-23 11:39:49 UTC 2024-06-01 20:38:36 UTC hello@padlet.com Mach is the speed of sound 13ablakemore_occ https://padlet.com/13ablakemore_occ/e18u40regvm8/wish/139564016 The ratio of the speed of an object to the speed of sound in the surrounding medium. For example, an aircraft moving twice as fast as the speed of sound is said to be traveling at Mach 2.]]> 2016-11-23 11:41:48 UTC https://padlet.com/13ablakemore_occ/e18u40regvm8/wish/139564016 Columbia disaster 13ablakemore_occ https://padlet.com/13ablakemore_occ/e18u40regvm8/wish/139564458 2016-11-23 11:43:55 UTC https://padlet.com/13ablakemore_occ/e18u40regvm8/wish/139564458 I have always wondered.. If a penny dropped from a sky scraper could it kill you 13ablakemore_occ https://padlet.com/13ablakemore_occ/e18u40regvm8/wish/139564866 2016-11-23 11:46:00 UTC https://padlet.com/13ablakemore_occ/e18u40regvm8/wish/139564866 13ablakemore_occ https://padlet.com/13ablakemore_occ/e18u40regvm8/wish/140139289 2016-11-28 12:22:47 UTC https://padlet.com/13ablakemore_occ/e18u40regvm8/wish/140139289 Why does a Space shuttle need heat shields for re-entry---- 13ablakemore_occ https://padlet.com/13ablakemore_occ/e18u40regvm8/wish/140142759 . When a spacecraft returns from orbit, or elsewhere, it is travelling at anywhere up to ten kilometres (six miles) a second. It needs to slow down considerably to make it to Earth’s surface, and the easiest way to do this is to use the Earth’s atmosphere as a ‘brake’. Spacecraft are actually designed to make use of this, so the wide heat shield bears the brunt of deceleration as the spacecraft passes through the atmosphere. We use the atmosphere as a handy way to decelerate spacecraft, rather than relying on fuel alone. 
On the way up a rocket has its ‘pointy’ end first, reducing atmospheric drag. It’s also travelling at a much slower speed than a spacecraft re-entering the atmosphere, so it doesn’t experience the same forces or heating.

]]> 2016-11-28 12:41:01 UTC https://padlet.com/13ablakemore_occ/e18u40regvm8/wish/140142759 13ablakemore_occ https://padlet.com/13ablakemore_occ/e18u40regvm8/wish/140456103   a method or process of determining the concentration of a dissolved substance in terms of the smallest amount of reagent of known concentration required to bring about a given effect in reaction with a known volume of the test solution]]> 2016-11-29 11:43:15 UTC https://padlet.com/13ablakemore_occ/e18u40regvm8/wish/140456103 13ablakemore_occ https://padlet.com/13ablakemore_occ/e18u40regvm8/wish/140459433 Auroras are produced when the magnetosphere is sufficiently disturbed by the solar wind that the trajectories of charged particles in both solar wind and magnetospheric plasma, mainly in the form of electrons and protons, precipitate them into the upper atmosphere (thermosphere/exosphere), where their energy is lost. The resulting ionization and excitation of atmospheric constituents emits light of varying colour and complexity. The form of the aurora, occurring within bands around both polar regions, is also dependent on the amount of acceleration imparted to the precipitating particles. Precipitating protons generally produce optical emissions as incident hydrogen atoms after gaining electrons from the atmosphere. ]]> 2016-11-29 12:03:01 UTC https://padlet.com/13ablakemore_occ/e18u40regvm8/wish/140459433 13ablakemore_occ https://padlet.com/13ablakemore_occ/e18u40regvm8/wish/140459928 2016-11-29 12:06:23 UTC https://padlet.com/13ablakemore_occ/e18u40regvm8/wish/140459928 Formula for acceleration 13ablakemore_occ https://padlet.com/13ablakemore_occ/e18u40regvm8/wish/141971564 Where,
 v = Final Velocity,
u = Initial velocity,
a = acceleration,
t = time taken,
s = distance travelled.

]]> 2016-12-06 11:27:19 UTC https://padlet.com/13ablakemore_occ/e18u40regvm8/wish/141971564 13ablakemore_occ https://padlet.com/13ablakemore_occ/e18u40regvm8/wish/141972245 2016-12-06 11:31:52 UTC https://padlet.com/13ablakemore_occ/e18u40regvm8/wish/141972245 Why does water put a fire out 13ablakemore_occ https://padlet.com/13ablakemore_occ/e18u40regvm8/wish/141972352 Enough water thrown into a fire puts it out because:

  1. It 'steals' heat from the fuel when evaporating, and thus lowers the temperature, making it more difficult (or impossible) for the fuel to burn;
  2. It makes it more difficult for the fuel to be in contact with air, thus not letting oxygen and the fuel come together. There is oxygen dissolved in water, but it is captive and won't blend in with the fuel.
]]> 2016-12-06 11:32:33 UTC https://padlet.com/13ablakemore_occ/e18u40regvm8/wish/141972352 What is a black hole? 13ablakemore_occ https://padlet.com/13ablakemore_occ/e18u40regvm8/wish/141972628 A black hole is a region in space where the pulling force of gravity is so strong that light is not able to escape. The strong gravity occurs because matter has been pressed into a tiny space. This compression can take place at the end of a star's life. Some black holes are a result of dying stars.
Because no light can escape, black holes are invisible. However, space telescopes with special instruments can help find black holes. They can observe the behavior of material and stars that are very close to black holes.

]]> 2016-12-06 11:34:42 UTC https://padlet.com/13ablakemore_occ/e18u40regvm8/wish/141972628 Could black holes destroy earth? Black holes do not wander around the universe, randomly swallowing worlds. They follow the laws of gravity just like other objects in space. The orbit of a black hole would have to be very close to the solar system to affect Earth, which is not likely.If a black hole with the same mass as the sun were to replace the sun, Earth would not fall in. The black hole with the same mass as the sun would keep the same gravity as the sun. The planets would still orbit the black hole as they orbit the sun now.th? 13ablakemore_occ https://padlet.com/13ablakemore_occ/e18u40regvm8/wish/141973117 2016-12-06 11:38:47 UTC https://padlet.com/13ablakemore_occ/e18u40regvm8/wish/141973117 13ablakemore_occ https://padlet.com/13ablakemore_occ/e18u40regvm8/wish/141973346 2016-12-06 11:40:41 UTC https://padlet.com/13ablakemore_occ/e18u40regvm8/wish/141973346 Balancing Chemical Equations 13ablakemore_occ https://padlet.com/13ablakemore_occ/e18u40regvm8/wish/141973734 2016-12-06 11:43:26 UTC https://padlet.com/13ablakemore_occ/e18u40regvm8/wish/141973734 What is covalent bonding? 13ablakemore_occ https://padlet.com/13ablakemore_occ/e18u40regvm8/wish/141975385 A covalent bond is formed between non metal atoms, which combine together by sharing electrons. Covalent compounds have no free electrons and no ions so they don't conduct electricity.

The Periodic Table is an arrangement of the elements in order of atomic number. Elements in the same vertical column are in the same group or family and have similar chemical properties.

]]> 2016-12-06 11:56:06 UTC https://padlet.com/13ablakemore_occ/e18u40regvm8/wish/141975385 13ablakemore_occ https://padlet.com/13ablakemore_occ/e18u40regvm8/wish/141975492 2016-12-06 11:57:03 UTC https://padlet.com/13ablakemore_occ/e18u40regvm8/wish/141975492 Ionic Bonding 13ablakemore_occ https://padlet.com/13ablakemore_occ/e18u40regvm8/wish/141975632 Ionic bonding occurs between positive and negative ions, which attract each other and bind together to form ionic compounds. For example, sodium chloride consists of Na+ ions and Cl- ions bound together.

Each ion is surrounded by oppositely charged ions held in place by electrostatic attraction and forming an ionic crystal lattice. The ions in a crystal lattice are very strongly bonded - a high temperature is required to melt the crystal.

]]> 2016-12-06 11:58:12 UTC https://padlet.com/13ablakemore_occ/e18u40regvm8/wish/141975632 13ablakemore_occ https://padlet.com/13ablakemore_occ/e18u40regvm8/wish/141976507 2016-12-06 12:03:42 UTC https://padlet.com/13ablakemore_occ/e18u40regvm8/wish/141976507 13ablakemore_occ https://padlet.com/13ablakemore_occ/e18u40regvm8/wish/141977438 2016-12-06 12:10:06 UTC https://padlet.com/13ablakemore_occ/e18u40regvm8/wish/141977438 13ablakemore_occ https://padlet.com/13ablakemore_occ/e18u40regvm8/wish/141977621 2016-12-06 12:11:19 UTC https://padlet.com/13ablakemore_occ/e18u40regvm8/wish/141977621 13ablakemore_occ https://padlet.com/13ablakemore_occ/e18u40regvm8/wish/141977708 2016-12-06 12:11:57 UTC https://padlet.com/13ablakemore_occ/e18u40regvm8/wish/141977708 13ablakemore_occ https://padlet.com/13ablakemore_occ/e18u40regvm8/wish/141978127 2016-12-06 12:14:32 UTC https://padlet.com/13ablakemore_occ/e18u40regvm8/wish/141978127 How complex is the brain? 13ablakemore_occ https://padlet.com/13ablakemore_occ/e18u40regvm8/wish/141978632 Our brain is the most complex machine that ever existed. With over 7.146 billion models it is also the most ubiquitous. Despite this, we are unsure of its complexity. We still do not yet understand how it works. By defining the functionality of certain areas of the brain, and by understanding some of the mechanics at the neural chemical level, we still remain ignorant of how the brain coordinates all of its activities and develops language, thought and a sense of self.]]> 2016-12-06 12:17:33 UTC https://padlet.com/13ablakemore_occ/e18u40regvm8/wish/141978632 13ablakemore_occ https://padlet.com/13ablakemore_occ/e18u40regvm8/wish/141978863 2016-12-06 12:19:05 UTC https://padlet.com/13ablakemore_occ/e18u40regvm8/wish/141978863