## White hole and comparison of White hole and Black hole

A white hole is a hypothetical region of spacetime which cannot be entered from the outside, although matter and light can escape from it. In this sense, it is the reverse of a black hole, which can only be entered from the outside and from which matter and light cannot escape. White holes appear in the theory of eternal black hole.

It is a particular kind of singularity, it cant be directly observed. Its escape velocity is greater than the speed of light. White hole is the hypotential features of the universe. but the black holess were the first thing considered as a theoretical curiousity. Its easy to prove that the white holes exist. white hole is considered as the opposite of the black holes becausethe black holes dont let anything escape from their surface and the white hole are eruptions of matter and nothing can get inside the white hole. white holes are the possible solution to the law of general realitive.
white hole is the time reversal of teh black hole, it is actually expected to have gravity so thazt they can attract objects. ncollntision course with a white hole would never reach its point.
 diagram of the black hole and white hole

## Monday, October 17, 2016

### SPEED ASSIGNMENT

 Distance (m) Time (s) Time (s) for each 10 m interval Average Speed (m/s) for each 10 m time interval Acceleration (m/s2) for each 10 m time interval Reaction time 0.15 10 1.89 1.89 5.29 2.81 20 2.88 0.99 10.10 4.86 30 3.78 0.90 11.11 1.12 40 4.64 0.86 11.63 0.59 50 5.47 0.83 12.04 0.51 60 6.29 0.82 12.19 0.18 70 7.10 0.81 12.34 0.19 80 7.92 0.82 12.19 -0.19 90 8.75 0.83 12.04 -0.18 100 9.58 0.83 12.04 0

Acceleration is the speed of a moving thing. To find the acceleration, we can subtract the previous speed with the current speed and divide it with the time. The unit for finding the acceleration is meter per second.
Comparing to the speed  and the acceleration graph, the speed graph show us how much the runner was slowing down as the runner get closer to the finish line. And if the slope gets steeper,that means the runner is running faster and if the slope is not so steep that means it is going in a slower speed. The Acceleration graph show us where they speed up and where they slow down. But the speed graph show us the how fast and how slow the runner is going.

## Particle Theory Summative

One of the state is the solid to liquid. For example, in this case if the solid is the ice we can heat the ice to turn it into liquid. When we heat the water particle vibrate and it rolls so it makes the ice to melt.
the second state is the liquid to solid. if we want to turn liquid to solid  we can put the water in to a freezer to turn it to solid and in that case the liquid particles can only vibrate cause it is cold and they are now turning to solid again.

The air particles and the pizza particke bump into each other.

## Tuesday, September 20, 2016

### speed report

Speed Report
In science our classes have been working on speed. We had to do a project about speed which is running 30 meters in the field.
Instaneous speed is the speed of an object at a particular moment in time. Instaneous speed is measured by meters per second(m/s). Instaneous speed Is used in

## Wednesday, August 10, 2016

### Engineering process

Engineering Process

The engineering process is a process that the engineer use when building/ constructing things. When the engineers are building things they make plans and design, when they finish that they need to follow the steps of engineering process.

After that they need to think about the criteria and constraint, so that they know what they need to use and what they don't need to use. And if they use the criteria and constraint it saves their time and they could get the work done quickly and that way the engineers could take more time to construct things with less problems and it makes the construction easier.

When the engineers show their plans and design to their boss it is important to use scientific argumentation so that they don’t just claim and when the boss or someone ask for evidence, they should be ready to answer and should be able to give good explanation of the evidence. And lastly the engineers also need to use logic, but logic is not so important, but claim and evidence is important that they need to use it in almost every construction they do.

The next thing engineers need to do is collect the data and analyze the data