If you have any questions about material we’ve covered in class, you can post a question by leaving a “comment.” Be sure to include what class this is for. I will try to post a reply to you as soon as possible.
PLEASE do not wait until the night you have a unit test to post your questions because I might not get to them in time (you can try).
To Ms. Lo
I am Mandy from Block B and i was wondering if we could switch our topic from deep sea to space.
yes you can change to deep space but you need to talk about the sickness that you get due to the pressure, otherwise you will find it hard to talk about they symptoms and the treatment part of the project. please come see me about it next class.
To Ms. Lo,
I am Mandy from Block B Science 8. HI!
I just wanted to ask what is actually used to measure mass?
In the States of matter KMT notes, you’ve written that we use grams.
But in the Pressure I worksheet, you’ve written that we use kilograms.
In the textbook, it said that we can use both (beginning of chapter 7)
Which one do we use exactly?
Because from the last quiz, you said we were suppose to know which units we use, but there are three different sources to refer to, which one is correct?
Thankyou!
Mandy, we use grams or kilograms, since a kilogram is really just 1000 grams. When you have to calculate weight, remember that gravity is 9.8 N/kg.
what is the password for the science nine e-book
Science 9 and 10 E-Book Login Info
Username: WN39
Pass: LB39
Hi Mr. Ferguson, this is Alisa from Block D,
Just to make sure, about the onion root lab report, are the observations ONLY the drawings, chart, and graph, or do we need to write observations too? I think you said only the drawings, chart, and graph, but just in case.
Thank you!
That’s correct Alisa!
Hi Mr. Ferguson I just had a quick question, were we meant to do number 2 for conclude and apply and number 4 for analyze? Thank you.
(sorry if i posted this more than once!)
Alexa,
I know you handed it in already, but you were supposed to do all the analyze questions, and none of the conclude and apply.
Hi Mr. Ferguson,
I have a question: During mitosis, if plant cells dont have centrioles, then how are spindle fibres held at each ends?
I read some stuff on the internet, and it says that they’re held by the nuclear membrane. But I thought the nuclear membrane was supposed to disappear during prophase.
Thanks.
Shirley Xie
Good question Shirley. Currently the full function of the centrioles is not completely known. Animal cells that have had their centrioles removed have been found to still undergo mitosis. It is thought that the spindle fibers are guided by the centrioles in animal cells, and that the centrioles also contribute to the formation of microtubules such as the cilia used to propel cells (like a tail). Plant cells do not have cilia so they do not need centrioles for this function. Here are a couple of links to some Q/A’s about centrioles.
http://www3.interscience.wiley.com/journal/113453994/abstract?CRETRY=1&SRETRY=0
http://wiki.answers.com/Q/What_do_centrioles_do
I was wondering if we needed to know the notes we took about mendelion’s theory for the midyear?
Thanks,
Audrey
No, that was an additional lesson that I thought would be interesting. Mendel’s genetics will not be on the midyear.
Hi, for 8-1C fruit battery lab, were we supposed to write an observation?
The data that you recorded in your table are your observations. You can title the section Data/Observations. If you want to note anything else in that section, feel free.
Hi Mr. Ferguson,
Just wondering, do we have a test on Tuesday? Lots of people are unsure, because the sub didn’t say anything. Also, are we to write a formal write-up for the lab we did in class?
Thanks,
Chenoa (blk G)
No, We’ll probably have the quiz on Thursday, then a Unit Test the week after. Just fill in the data table and answer the Analyze and the Conclude and Apply questions for the Lab that you did with the Subb.
Hi Mr. Ferguson !
This is Mandy from Block D Science and I’m not really sure how to draw the diagrams (Ex. Page338 Question 41) showing “charging by conduction” and “charging by induction”. For “charging by conduction” with a positive rod, the negative charges in the electroscope will be near the rod and the positive charges will be further away.. is that right? Will there will be less charges in total because the textbook says that the negative charges are transferred to the positive rod.
And if what I said above was right, “charging by conduction” with a negative rod would basically be the same thing but with the positive charges in the electroscope near the rod and the negative charges further back? Will there be more charges in total since the negative rod is transferring electrons to the electroscope?
I know this is a handful of questions but I didn’t get a chance to ask you today during class due to the HCE assembly.
Thanks so much!
The diagram in #41 should show the negative charges move to the right, as they are induced by the positive rod. I think it illustrates the point better to leave the positive charges in place, since the nuclei of the atoms that contain those positive charges do not move.
Once the object touches the rod, the negative charges will move over to the positive rod, making the total number of charges on the neutral object lower.
With a negative rod, the electrons will be induced to move away from the rod, and when the rod actually touches the electrons would move off of the negative rod on to the neutral object. The positives stay in place in both cases.
Blk E (w/ fredy)
Not science related:
dude, I still need those dvds by the end of the year, so burn rubber man.
Hopefully I won’t have to come looking for you.!]
sorry, couldn’t find your email address
Not to worry Shay, I’ll be back on Monday. I’ll make sure that I have made some copies, and hopefully I’ll get a chance to watch them!!
Thanks again for lending them to me.
Hi Mr. Ferguson!
Sorry about the previous message I hit enter and didn’t mean to! Anyways I was wondering where the science exam is. I know that it is on Thursday 11th at 1:45 but I was wondering where in the school it is! Thanks!
The BA Science 9 Final is in the Small Gym.
Hi Mr. Furguson… i’m steven.. I was wondering that if both speed and velosity are about the distance an object travels during a given time interval divided by the time interval. so what is actually the difference between these two terms?
Velocity must always include the direction, such as;
3 km/h [E]. Velocity is a vector quantity, speed is a scalar quantity.
hello, how many multipliable choose and written questions are there on the exam?
80 multiple choice. No Written