My scientific investigation is what best removes tomato sauce stains?
Hypothesis:
Using the four following methods
A: Water
B: Sunlight
C: Detergent
D: Vinegar
I will try to remove tomato sauce stains. I believe the best outcome will be the detergent and the stain in the sun will become permanent.
Method:
1.Label 4 pieces of cloth A B C D.
2.Smear tomato sauce on 4 pieces of cloth.
3. Soak A in water alone
Leave B out in the sun.
Soak C in detergent
and D in vinegar.
4. Record changes to stains dailyDay 1
Stained cloths put into place
Day 2
Cs and As stains are becoming less visible.
D has not changed at all.
B is becoming more visible.
Day 3
C stain is closest to being removed.
D has still not changed at all!
A Fading a little
B Is drying out and crumbling
Day 4
No further change to any.
Day 5
B is changing colour from bright red to dull orange.
A and C continue to fade slowly
A is also starting to grow mould
D has no visible change.
Day 6
B is starting to fade
Day 7
A has lots of mould everywhere
B Has half gone
C Stain is barely visible.
D has not changed.
Conclusion During the week D didn’t change at all. A slowly disappeared and grew mould at the end. C disappeared faster than A. B started changing colour but started to disappear at the end of the week. My hypothesis was partly correct C did disappear the fastest but B didn’t become permanent it started to disappear after a while
Using the lamp after 5 minutes the thermometer’s readings were both at 30 degrees. I covered thermometer 1 with a glass jar after ten minutes the readings from thermometer 1 was 26 degrees this remained constant for the next 9 readings. Thermometer 2 remained on 30 degrees. The reason I think thermometer 2 stayed on 30 degrees because the heat did not change and thermometer 1 was 26 degrees because the glass jar was acting as a barrier. The following day I tried to do it in the sun but because it was cloudy day the readings were inaccurate. I think that the solar power on the thermometer would be different compared to the lamp light. The thermometers Didnt act like how the greenhouse effect works very much. It shows that the sun works differently to a lamp but with the sun you can never get the temperature to stop changeing and it is hard to get a clear sky. I thought the thermometer in the jar would heat up but instead it th thermometer’s temperature dropped and stayed like that.
Roald Amundsen was an experienced sailor and explorer that came from Norway. he went to medical school which he left in 1897. he wanted to reach the South Pole first and he new Douglas Mawson was going to go so he secretly went before he could so he left at June 1911 and got there one month before Douglas Mawson’s team but lost some men.when he made it back on March 7, 1912, Amundsen finally cabled his brother leon with the historic news.He died on 1928 (he was 56) when his plane crashed in the Arctic ocean while flying to save his friend, the Italian explorer Umberto Nobile.
Roald Amundsen’s ship
Douglas Mawson
Douglas Mawson was an Australian teacher for mineralogy at the University of Adelaide in 1905. He studied mining, engineering, chemistry and geology at university. He had led a series of expeditions to Antarctica before the journey to the south pole. In 1907, Mawson was interested in rocks that had been left after glaciers had melted, so he travelled to Antarctica with a team that where going to the south pole and later became the leader. they left on 1912 and had hardship the whole way. they ran out of food and had the eat thier sled dogs which caused them to get sick they also got frostbite and gangrene. He reached the south pole to find that he was beaten by Roald Amundsen who had made it one month ago. they died on the way back while they were in there tent.
Douglas Mawsons team
The similarities and difference’s between Mawson and Amundsen
there are a lot of similarities between Amundsen and Mawson like they both wanted to reach the pole or they both were experienced explorers but they are more different than they first look. they both decided to go for different reasons Amundsen wanted to go because he wanted to get to the south pole first and Mawson because he was interested in rocks that had been left after glaciers had melted. Mawson studied mining, engineering, chemistry and geology at university but died and Amundsen only went to medical school but he survived.The reason I think that Amundsen got there first is the way he took to get there which gave him the advantage making him the first to the South Pole and leaving poor Mawson and his team to their DEATH.
hello my name is nicholas this is my first post for 2009 my class is 5/6s. it is my last year in primary and i hate homwork. i am very hungry and am having chicken for for dinner.
Douglas Mawson
