TY Science Term 1 by Shauna

What is Mach

13sharten_occ — 2016-11-29 11:30:39 UTC

It is the ratio of the speed of a body speed of sound.
Mach is 1234 km/

Distance, Speed and Time

13sharten_occ — 2016-11-29 11:34:37 UTC

Dad's Silly Triangle.

Velocity

13sharten_occ — 2016-11-29 11:43:16 UTC

Velocity is acceleration in a given direction.

Acceleration

13sharten_occ — 2016-11-29 11:43:54 UTC

The increase in speed during a period of time.

Acceleration Formula

13sharten_occ — 2016-11-29 11:46:30 UTC

Speed

13sharten_occ — 2016-11-29 11:47:54 UTC

The rate in which a body moves.
It can be measured in km/h or m/s etc.

Time

13sharten_occ — 2016-11-29 11:49:06 UTC

Is a measurement of how long it takes.
It can be in hours, minutes or seconds.

Distance

13sharten_occ — 2016-11-29 11:50:33 UTC

How far you travel. What length of space you travel between two points.
It can be measured in kilometres, metres or centimetres.

Oxygen Production

13sharten_occ — 2016-11-29 11:55:51 UTC

Hydrogen Peroxide naturally breaks down to produce Oxygen and Water.

Manganese dioxide acts as a catalyst for this reaction to speed up the breakdown of the Hydrogen Peroxide.
•2H2O2 = 2H2O + O2

Titration

13sharten_occ — 2016-11-29 12:02:26 UTC

When an acid and a base react salt and water are formed.

This is called a neutralisation reaction.

The average titration figure is then used to standardise the acid solution.

Aurora Borealis

13sharten_occ — 2016-11-29 12:08:11 UTC

The bright dancing lights of the aurora are actually collisions between electrically charged particles from the sun that enter the earth's atmosphere. The lights are seen above the magnetic poles of the northern and southern hemispheres.

Evolution

13sharten_occ — 2016-11-29 12:18:51 UTC

The process by which different kinds of living organism are believed to have developed from earlier forms during the history of the earth.

Why do fish change gender?

13sharten_occ — 2016-11-29 12:24:10 UTC

In fish that change gender only parts of the reproductive organs mature at first. The fish lives as a male or a female for awhile. when the fish reaches a certain age, or its mate dies those initial reproductive organs wither away and other reproductive organs mature, so that the fish becomes the opposite sex. This change is caused by hormones or chemical messengers in the blood. A fish has both testicular and ovarian tissue and it is matter of just encouraging one of those tissues to develop. They use mostly vision and sound signals to communicate to hypothalamus in areas of the brain. This communicates with the pituitary gland which is a little gland right below the brain. This releases hormones into the blood and communicate to the gonads. This causes the testicles to absorb and ovaries to develop. This completely reverses the behavior so they change from a male to a female fish.

Fish changing gender!

13sharten_occ — 2016-11-29 12:26:13 UTC

What is evolution?

13sharten_occ — 2016-11-29 12:28:45 UTC

The 5 Space Shuttles

13sharten_occ — 2016-11-29 12:34:41 UTC

NaOH and HCL Preparation

13sharten_occ — 2016-12-06 06:48:21 UTC

HCL+NaOH= NaCl=H2O

Discovery

13sharten_occ — 2016-12-06 06:54:02 UTC

Columbia

13sharten_occ — 2016-12-06 06:54:55 UTC

Atlantis

13sharten_occ — 2016-12-06 06:56:14 UTC

Challenger

13sharten_occ — 2016-12-06 06:57:24 UTC

Endeavour

13sharten_occ — 2016-12-06 06:58:04 UTC

NaOH and HCL Experiment

13sharten_occ — 2016-12-06 07:00:32 UTC

Atom

13sharten_occ — 2016-12-06 11:31:22 UTC

Inside the nucleus is protons and neutons. Protons are positive and neutrons are neutral. Electrons orbit the nucleus on their shells.

Why Space Shuttles need heat shields?

13sharten_occ — 2016-12-06 11:39:25 UTC

It’s because the forces on re-entry far exceed those during a launch, enough to tear an unprotected spacecraft apart. Rockets are built to withstand the atmospheric forces as they leave the atmosphere, but it’s nothing on the scale of re-entry.

Ionic Bonding

13sharten_occ — 2016-12-06 11:43:16 UTC

An ionic bond is the bonding between a non-metal and a metal, that occurs when charged atoms (ions) attract. This happens after a metal atom loses one or more of its electrons to the nonmetal atom. This makes the bond stronger and harder to break.

Chemical Bonding

13sharten_occ — 2016-12-06 11:49:00 UTC

Chemical bonds are what joins atoms together. When two or more atoms are in a chemical bond they stay together unless the needed amount of energy, or more, is transferred to the bond. Something different can then happen.

Convalent Bonding

13sharten_occ — 2016-12-06 11:50:05 UTC

Covalent bonds are chemical bonds between two non-metal atoms. Atoms share each other's electrons to create a full outer shell between them.

Chemical Bonding

13sharten_occ — 2016-12-06 11:57:27 UTC

A Black Hole

13sharten_occ — 2016-12-06 12:01:09 UTC

A black hole is a region of spacetime exhibiting such strong gravitational effects that nothing—not even particles and electromagnetic radiation such as light—can escape from inside it. The theory of general relativity predicts that a sufficiently compact mass can deform spacetime to form a black hole.

A Black Hole

13sharten_occ — 2016-12-06 12:04:48 UTC

Map My Run

13sharten_occ — 2016-12-06 12:11:12 UTC

Map My Run

13sharten_occ — 2016-12-06 12:12:48 UTC

It is a fitness tracking application that enables you to use the built-in GPS of your mobile device to track all of your fitness activities. Record your workout details, including duration, distance, pace, speed, elevation, calories burned, and route traveled on an interactive map.

Line Graphs

13sharten_occ — 2016-12-06 12:14:52 UTC

Simple line graph

13sharten_occ — 2016-12-06 12:16:30 UTC

NaOH and HCL

13sharten_occ — 2016-12-06 12:21:19 UTC

NaCl and H

13sharten_occ — 2016-12-06 12:24:45 UTC

Theory of Pythagoras

13sharten_occ — 2016-12-06 12:28:30 UTC

Columbia Astronauts

13sharten_occ — 2016-12-06 12:31:01 UTC

All seven astronauts on the space shuttle Columbia died.

Names of Astronaunts

13sharten_occ — 2016-12-06 12:34:32 UTC