energy

this photo has a picture of a soccer ball in the air with a lot of gravatational potential energy.

Imagine that you can travel back in time and talk to yourself about one of the concepts below. What would you tell yourself about the concepts that who make it easier to learn.



if i could go back in time to explain something to myself, i would explain the concept of constant versus conesrved. i would tell myself that constant means that the energy stays the same amount, but its in a different or the same form. conserved means that the endergy may change and be either more or less, but you can account for it. gravatational potential enegy is when you have a lot of potential for falling, like a ball perched atop a cliff has a lot of gravatational potential enregy. kinetic energy is when you are moving, or like accelartaion and speed, like a runner running on a track.internal energy is heat, or energy inside of an object.


+ What experiment was helpful/might be helpful in constructing this concept.\

think of bar charts- when you have a bar chart that has the same amount of enegy both ways, but the forms are different, its constant.
if the forces are different and some is gone, make sure there is some work done so you can account for that energy.

Doing/ calculating work

if i could go back in time and talk to myself about doing and calculating work i would tell myself that doing work is just moving something or applying a force to the system to make it move or to make the system do what the system is supposed to. i would also tell myself that calculating work is just like algebra. i would say that we use the formula W= FD, and that the work equals force times the displacement. i would also tell myself that if i am given a mass, i can use another formula to find the force to make the equation work.

the experiment that was helpful in understanding these concepts for me were mostly just the homework. going over the homework in class really helped me to understand how to use the formulas.

the picture of a cartoon lifting a weight also applies to the calculating. to calculate the amount of work being done, you would find out how much it weights, and then you could find how much work is being done in joules.

2/1/10

+ Imagine that you can travel back in time and talk to yourself about one of the concepts below. What would you tell yourself about the concepts that who make it easier to learn.
if i could talk to myself about characteristics of the moon, i would tell myself that it is really easy to memorize. i would explain the directions of which ways the moon has phases, and how to idesntify them. i would tell myself that to determin waxing verus wanning,

+ What experiment was helpful/might be helpful in constructing this concept.
in understanding thsi concept, really the only thing that helps is prating identifying phases. also, the moon simulations we did in c;ass helped.

revOlutIONS aND oUR EArTh

MONDAY- HOOOOROAAAAYYYY MLK DAYY!! NOOOO SCHOOL!! NOOOOO SCIENCE!!!!!.....i mean boo

TUESDAYYYY- now werwe back at the Npms, fun 3 day weekend!
ok so today, tuesday not monday!,we discussed why the earth has seasons, a BIT of a continuation from last week. so we did an experament with a flash light where we made the OpEN door INDIREct and a closed one EDIREct. the flashlight was the sun. and the door was the earth. there is a 23.5 degree tilt on the earth. the tilt on the earth makes the sin's light direct and indirect. when indirect it is cooler, and when direct it is wawrmer.

WeDNESDAy- yayy not TUeSDAY
ok so TODAY we went over SOLTICCES and EQUINOXES. a soltice casuses the longest and shortest days and the equinoxes is when the days and nights are equal. ex- 12hrs day and 12 hrs night.

THURsDay- yayy not WEDNESDAY
ok so today we went over a lot of stuff too. we had a quiz on equinoxes and soltices and whatever the heck we leanred! we also did a simulation during class with the earth and sun. we did this because we were learing about earth and moon revolutions and orbits.

FRIDYYy!- YAYYY (this is today!!!)
ok so today ( and this time thats ACTUALLY today!)
we made a list of things that u have to do in order to orbit. as follows
+2 massive objects
+object has some sort of initial velocity (but it has to be juust right)
+moving too fast, it will just "flyu away"
+moving too slow, crash into earth haha
+distance away makes a difference.
+and mroe!

Moon Moon Moon!!!!!!

OOHHHH MONDAYY!!!!
today we applied force diagrams to the earth sun moon relationship. we learned about tides and how they have to do with the moon! the moon affects tides because of thier gravitational pull, apparently its NOT the magical moon stuff. we learned about 2 force diagrams, and 2 different tide types. here they are!
Neap Tides- moderate or kess extreme tides
Spring Tides- very high high ties and very low low tides. tides are to thier extremes.
THATS A LoT OF STUFF FOr ONE SIMPLE MODAY!!

YAYY TUEsDAY
on tuesday we andswered some astronomy questions including WHy do we have seasons? this was a very good question. we spent a looooonnnngggg time thinking of hypothesis and we narrowed it down to these
1. tilt causes earth (one hemisphere) to be pointed/angled toword the sun, and one (hemispohere) away from the sun, causing warmer/ clolder wseasons. we have four but not nesesirly everyone does.
2. sunlight is more concentrated based on tilt and position.
TILT AND ROTAION DETERMIN SEASONS.

tHURSdaY AND WeDnESDAY
we had that honors biolilogy thing......

FRIDAAYY
we went over seasons agaibn!

MOOoON

This week in science we started a new unit. i am so happy that theres nooo more kinimatics and dynamics!!! yayy!!!!

ok so this new unit is moon stuff.

on the first day (MONDAY) we went on a website and we looked at moon simulatioins. we made observations about it. we had to make like ten observations in our notebook. and then we shared them with the class. in the class we disscussed about moon patterns and we got an introduction to the moonphases.

on tuesday, (SECOND DAYY]] we did moon phase stuff. we tried to memorize them...

on wednesday, thursday, we did a lab in the website.

on friday we went over it.

Force

this week in science we learned about Newtons 3rd law. his law states that if you push on an object, that object will exert a force on you too. we did a lot of experamints to prove this. and then we learned the official term for it, which is Newtons Third Law.

force diagramssss

this week in science we did the following.

monday- ok well last week we finished kinamatics and stuff so its new unit time! we learned about forces and how they work. we learned that worce of certain objects is more forcelful than other objects. such as a basketball versus a bowling ball. a bowling ball has much more force on your hand than a basket ball, but the force isnt from the ball. it is from the earth. gravity is pulling it down. its not the ball thats forceful.

tuesday- today we learned baout force diagrams. we did many emaples and made a lot of force diagrams. force diagrams show the way that the force of an object is going. either if it is being pulled up, being pulled down, or not being pulled at all, which i dont htink is possible.

wednesday- on wednesday we did more exapmles and we clarified everyhting.

thursday- on thursday we pushed mr finleys car and we figured out taht even after you let go of the pbject, the force keeeps going.

fridayy- on friday we leaned more about that. we also leaned that friction of the objct onm the floor adds more forces. we made more advanced force diagrams aswell.

Motion yay............

ok so this week in science we did a lot with graphs and motion diagrams. yes, motion diagrams. on monday we realized that dot diagrams were unreliable and they could display the wrong messgage. they could be going one way and not represent the right thing. so, we learned about motion diagrams. motion diagrams display velocity, direction, positive and negitives, adn more! how greattt.
on tuesday we leaned more about how to make a moition diagram and why they are better than dot diagrams.
okay so now on wednesday we drew motion diagrams for marbles rolkling down a hill. we also learned about path legth which is the distance that u travel. and we learned abuot displacemembt which corrisponds with velocity. on thursday and frieday we did wkrosheetyse

Motion 3 day week!

this week was a 3 day week! yay!
we did indexes on monday because a lot of poeple werent getting it. of course i was one of those that do get it! hehehe. o and we learned that velocity is a fancy word for speed.

ok so now its tuesday. yay only 2 days left :D
so today we did a lot of homework reveiw and we drew graphs amd stuff.
we discussed a lot within the classroom about the unit that were doing now and so we made sure everyone understood :D

yayyy wednesday its the last day of the week!
OK SO TODAY.... we did more with graphs and indexes. mr finley drew stuff ( by stuff i mean graphs) on the board so we did activities with that durning class. what a wonderful short weeK!

MoTiOn!i!i!i!

this week in science we made graphs! yay graphs!
on monday we cleared up the whole thing about movieng and people. since none of us understood, we do now!
on tuesday we did a lot online. we looked at the website and did like 4 worksheets on graphs and stuff. it helped understand more. we then finihed that for homework and more!
on wednesday we clarified the usage of trendlines and graphs. the trend lines do exactly what theyre called. they show the trends in the data. we also clasified the way that u draw graphs.
CONSTANT RATE- straight line, moving in one general direction, no curnve
SPEEDING UP- a curve in the line going up. not staaight.
SLOWING DOWN- rising and then a straight line.
NOT MOVNG- completely straight.
what a fun week!

Motion

This week in science we started a new unit. This unit is motion. We finally finished the light unit! On Monday, IT’S MY BRITHDAY!!! HAPPY BIRTHDAY TO ME! OCTOBER 19TH!! YAY! We learned about the point of orientation. Mr. Finley walked around the room and we had to keep our telescopes on him. We realized he moved but he said that we moved. We told him he was wrong but he disagreed. We found out that depending on where you stand and what orientation you have, you see different things moving. Happy birthday to me:D
On Tuesday we dissected cow eyes. It was fun….
On Wednesday we learned about rates and directions. We leaned positives and negatives, and we learned how the math grid relates to motion. We also leaned our north, south, east, and west. Of coarse I didn’t know that!
On Thursday we did a lab about the rate of cars and if they have a constant rate or not. We figure out all the information and we made hypotheses, predictions, and experiment plans before we started. Oh and Mr. Finley was absent.
On Friday Mr. Finely was out again. We finished up our experiment and we took a quiz. Happy weekend!

Wrapping Up Light

Guess what happens this week!
Yup, u got it. TEST. O what a joy. Ok so we did a lot of fantastical things. Including studying and learning and so much fun stuff like that. You’re so jealous.

Ok so on Monday we did more reviewing of what we had learned. We talked more about particle models and wave models.

Then on Tuesday we got 4 different models on the board and we had to say what was wrong with them and grade them with our rubrics that we made on Monday night. We went over them and picked out the wrong and right things of them all. Then we learned how to draw diagrams correctly and we took notes on it.

For homework we had to do the first 6 sections of the study guide... fun.

After Tuesday came Wednesday, shocker. We did more with refraction and prisms. And we had to do the study guide for hw… again.

Thursday, day before the test. Wahoo! I went to the study session with mr.finley. yay bagels. It really helped me understand the concepts more so I am happy I went. In class did the prism thing where we found out how it refracted and stuff. We saw the reflections of the rprism and the refractions of the prism. It was pretty cool that we predicted exactly what happened.

Friday. Dreaded test.

Light Light Light! particle and waves

This week in science we did a lot of learning. On Monday we were all so tired :( but then we started science and it was like a splash of water on your face! ...kind of. Ok so on Monday we continued with what we started a little last Friday. We put the ruler inside of the beaker of water and observed. Yay observing! We noticed that the ruler appeared to be getting fatter from the side as it entered the water. And from the top of the jar it looked like the ruler was broken. It appeared to be bent although we know it was perfectly whole.
On October 6, 2009, which was a Tuesday, we learned about Huygens, and Newton. One had a particle model and one had a wave model. We made hypotheses using the particle model because we thought it was correct. We made a model where the light goes through the glass using a particle model.
On Wednesday we went in more depth on the whole wave model and particle model. We found out that the particle model isn’t correct but we use it when it works. The wave model is really the one that is correct. We found out how the stuff moves through light as well.
On Thursday we saw how waves work. We made a final hypothesis which was this. When light goes through a more dense material, it moves toward the normal. And when it goes through a less dense material, it moves away from the normal.
Friday- NO SCHOOL!

Light woohoo~

This week in science was really intense. We did so many experiments and exciting things it was crazy! Ok so we started off the week on Tuesday! Why Tuesday? Because of Yom Kippur! Go holidays! We did these huge experiments that were really important on Tuesday! They’re so important that we’re doing a whole entire lab report on them! Ok so it had to do with of course, light, and lasers! We found out the following ideas/ whatever you wanna call them! We learned that surfaces vary in their reflectivity, “shiny” surfaces reflect better, and that the colors that are not black show up brighter. I know what you’re thinking, oh my goodness that’s a lot of information for JUST a Tuesday! But wait, there’s more! Yes, more! Ok so we also came up with this theory that where you point the laser, the laser makes the angles change. What? Angles? Where did that come from? Well, you’ll find out tomorrow!
Oh my gosh it’s already tomorrow! Happy Wednesday! Ok so today we got more into the whole angles thing. Well first of all, last night’s homework was to write an experiment for measuring the angle of a laser bouncing off of a mirror. Now let’s name the angles, for now let’s go with angle A and angle B. that works for you right? We came up with a hypothesis. Wanna hear it? Ok! Well angle A and angle B should always be the same. It’s brilliant! Absolutely wonderful! So the way we tested this is we experimented. A turn out our hypothesis was correct! The experimenting took over Thursday and on Friday we just reviewed and stuffs! K that’s my blog 4 this week! Peace out bloggers!

Light and Mirrors

This week in Mr. Finley’s science class we did a lot of experiments! We also earned quite a few ideas including things like reflection. We learned that if you shine a laser onto a mirror, then you see a faint dot on the mirror where you would expect the laser to point. If you look around the room, you’ll find the proper dot that is shining just as bright as it would without the mirror redirecting its light. Now you might be saying to yourself, doesn’t that mean that the lasers’ light is reflecting twice? Once off the mirror onto the wall, and off the wall into your eyes. Yes, it’s true!! That is what happened with those good old lasers and mirrors! The way we know that this is happening is we tested it; of course! If you get the erasers and clap the dust out of them like we did last week, you can see the direct path of the laser going from the laser itself, off the mirror, and onto the wall! Amazing!!

We learned these ideas in science by observing, making hypothesizes, and experimenting. Mr. Finley would tell us an idea once and while and make us figure out if it is true of false by testing it! Science is so exciting! As a class we discussed certain things like- how is it possible that the light from the laser is over on the wall over there, even though we’re pointing at the mirror?! It was a stumper until we experimented and taught ourselves how it works.

It is SO important to know these ideas! I mean sure, I could have lived a long, happy life without knowing how lasers work, but now that I know, it’s so great! We really should know how these things work because it is a part of our everyday lives. We use light to see all the time and I mean ALL THE TIME. Lasers have a great deal of real world application…. I think!

Light

What science ideas did you learn?

I learned that when you use a laser pointer there is a stream of light. the light bounces off of particles, such as the flour particles, and we are able to see the stream of light. I also learned that when you go into a dark room with absolutely no light entering the room, you can't see anything. light needs to bounce off objects and enter your eyes to let you see things. The last idea i learned is that when using a light bulb

How did you learn these ideas?

i learned these ideas in many ways. the main ways were by experamenting, discussing, and learning from Mr. Finley. an example of when we experamented was with the laser pointers. we had a theory that there was a light beam that our eyes can not see. we used the supplies Mr. Finley supplied us which were socks, flour, and erasers, to test this theory. we experamented and found that if we clapped the erasers with four on them and created lots of dust, we could see the light beam which was not visible to us before.

Why is it important to know this idea (What real world application is there)?

it is important to know this idea of light because we use light everyday and we should know how it works. it is important to know how our eyes work also. we should know things like how we see in the dark and if we can see at all.