Weights+wonderings

As you work through some of the weights explorations post some of your findings here. Remember to include your school and your first name.

Mick found out about the brain and water - interesting.

By Kimberly, Nicole and Bethany from Greytown School. Autumn Leaves. Pick a tree somewhere around your classroom and estimate the weight of leaves on it. How many leaves on the tree? Person 1)300. Person 2)350. Person 3)450.

How much do you think they might weigh? Person 1) One leave:1/2 a gram All the leaves: 90 grams..

Person 2) One leave:3/4 of a gram. All the leaves: 20 grams.

Person 3) One leave:1/4 of a gram All the leaves:100 grams.

How might you weigh all the leaves on a tree? Get one leave and weigh it then times it by the number of the leaves on the tree.

How much does one blade of grass weigh? Person 1)1/3 of a gram Person 2)1/5 of a gram Person 3)1/8 of a gram.

Ok girls now you have your estimates how are you going to check them out?

The thing about one trillion dollars is really impressive just look at all that money I thought that the one hundred million was heaps and it is but then you look at that and forget about it. Tyla, Pongaroa

A massive iceberg with enough freshwater in it to fill Sydney Harbor 135 times over is about to break off the Mertz glacier in Antarctica. That is a lot of water luckily it won’t melt for another 30 years, Would we drown? Matthew, Pongaroa

 I was really surprised that a bottle-nosed dolphin was about 1075g heavier than a cow’s brain and a Pithecanthropus man is 352g heavier than a polar bears. matthew,pongaroa

**I thought that the brain would not have 75% water in it. I thought that the brain would be some sort of squashy meat. Matthew, Pongaroa**
 * The brain is 75% water **

A black rihnoe speads its time eating. Andrew Pongaroa

__**Josie, Room 13, Greytown School**__ Tiny things... Where to start?! probably the tiniest thing I can think of is an atom which I thought was the smallest thing ever until last years ‘How big is big?’ program where I found read about splitting atoms! Ahhh! This is just too much! I can’t even comprehend an atom let alone half or quarter of one! Imagine, if ONE strand of hair is about one million atoms in width an ant would be like sextillion [found this number in that article] atoms wide. That is such a lot of atoms and thats for one of the smallest animals on earth. I wonder how many atoms the world is made out of.....? Wonderful wondering Josie. And to think that if we scale the atom to the size of our solar system there is more empty space in the atom.