this week in science we talked about the earths orbit. We talked about why it orbits the sun. it has to do with the suns direction and velocity. Also the angle of the earth, at the beginning of the week we also talked about solstice and equinox. they are both involved with the longest and shortest days of the year.
we learned all of this by doing the orbit simulator. this taught us that the earth needs distance velocity and angles to have a correct orbit aroung the sun.
this is good for me to know because this taught me that the earth doesnt just pick a random place in the atmosphere and justy orbit. i learned that i need the angle and the velocity. if it is farther away i need less velocity, closer more velocity.
Monday, January 25, 2010
Tuesday, January 19, 2010
january 19
this week in science we talked about the tilt of the sun and how it effects the seasons of earth. The winter is caused by the sun be far away from the earth and it being tilted away from the sun. and summer is tilted toward the sun , and revolves closer.
we know this because we did many lunar simulations and regular simulations. also we had demonstrations in class. such as the flashlight shined directly and indirectly on the door.
this is important because now we know how the sun interferes with the earths seasons. and also i never really knew that the sun made up the seasons, i thought it all depended on the earth itself.
we know this because we did many lunar simulations and regular simulations. also we had demonstrations in class. such as the flashlight shined directly and indirectly on the door.
this is important because now we know how the sun interferes with the earths seasons. and also i never really knew that the sun made up the seasons, i thought it all depended on the earth itself.
Monday, January 11, 2010
astronomy
this week in science class we learned all about the moon, and how it has different phases. in order the phases are new moon,waxing crecent,1st quarter,waxing gibbous,full moon,waning gibbous, third quarter,waning crescent. The moon has different phases because it revolves around the sun.
we learned about this by drawing models of the earth and moon and sun, we lined them up and made them revolve. We also had a person rotate and revolve around a table.
In real life we need to know this because people that live down the shore need to know how the moons force works, with tides and currents. that is how many people drown.
we learned about this by drawing models of the earth and moon and sun, we lined them up and made them revolve. We also had a person rotate and revolve around a table.
In real life we need to know this because people that live down the shore need to know how the moons force works, with tides and currents. that is how many people drown.
Sunday, December 13, 2009
This week in science we learned about how weight can affect the amount of force a person/thing must put on an object. we know that if there is more weight the harder you have to pull on something. the less weight, the less force.
so we put 1 person on a cart and had 1 person pull, the cart was able to be pulled across the room very easily. then we put 2 on the cart and 1 person pulled. this became a little more struggling, but it was able to be pulled. lastly we put 3 people on the cart, now this was very hard for the person applying force on the cart, after 5 seconds of pulling the rope snapped. the same thing happened the next 3 times.
so these kind of things help us in real life because if ur trying to lift a 2 ton animal such as and elephant per say. you need to use a crane. this ties into the experiment when the more weight the more force.
so we put 1 person on a cart and had 1 person pull, the cart was able to be pulled across the room very easily. then we put 2 on the cart and 1 person pulled. this became a little more struggling, but it was able to be pulled. lastly we put 3 people on the cart, now this was very hard for the person applying force on the cart, after 5 seconds of pulling the rope snapped. the same thing happened the next 3 times.
so these kind of things help us in real life because if ur trying to lift a 2 ton animal such as and elephant per say. you need to use a crane. this ties into the experiment when the more weight the more force.
Sunday, December 6, 2009
force week
This week in science we talked about force. force is a push or a pull on an object. so when an object holds up another, the force would be the earth pulling on the frame, and the nail holding up the frame.
We learned this just from experimenting and drwing force diagrams. We drew on the white board and different hypothesises to our experiments we drew out. we knew it was the earths force and not gravity.
these ideas are used in real life because, astronauts dont float all the way to earth because of its pukl when theyre on the moon, the moon just pulls them in. Also when the atsrounauts come close enough to the earths atmosphere the force pulls them in because there is nothing to hold them up, unless they are leaving earth with there rockets puling them out.
We learned this just from experimenting and drwing force diagrams. We drew on the white board and different hypothesises to our experiments we drew out. we knew it was the earths force and not gravity.
these ideas are used in real life because, astronauts dont float all the way to earth because of its pukl when theyre on the moon, the moon just pulls them in. Also when the atsrounauts come close enough to the earths atmosphere the force pulls them in because there is nothing to hold them up, unless they are leaving earth with there rockets puling them out.
Sunday, September 20, 2009
science "lights"
This week I learned about how laser lights bounce/reflect of solid objects back into our eyes and all over the room. That is also the same with a light bulb, the light bulb reflects off of the glass to every part of the room around it. Also our eyes can see objects only when light reflects off of it back to our eyes. So if there is no light{dark room} then our eyes cant see objects/writing etc.
we learned this because we set up experiments to test our hypothesis. Such as making a dark room, covering the light with tin foil, making two people look at the light, and also using chalk, and dust particles to see the lasers path.
We use this in real life because on army sniper rifles the marines use the laser light because the enemy can't see the path of the beam. Also security systems use the beams to go across rooms so if they are triggered the robber will be caught. also it is used so we don't bash our faces into walls, we need to be able to see the solid objects.
we learned this because we set up experiments to test our hypothesis. Such as making a dark room, covering the light with tin foil, making two people look at the light, and also using chalk, and dust particles to see the lasers path.
We use this in real life because on army sniper rifles the marines use the laser light because the enemy can't see the path of the beam. Also security systems use the beams to go across rooms so if they are triggered the robber will be caught. also it is used so we don't bash our faces into walls, we need to be able to see the solid objects.
Subscribe to:
Posts (Atom)