Dave Said:

I need a science fair project?

We Answered:

make it on the cell organism

John Said:

Earth Science crossed with Plant Biology Science Project Ideas?

We Answered:

Try this, misspell your Kid's name and see if anyone notices. I bet his boy friends like the missspelling. Good Luck!

Russell Said:

10 pts. for help?

We Answered:

Are waters in urban areas more poluted than in rural areas?
PURPOSE

The purpose of this experiment was to determine whether the level of certain chemicals in the tributaries to the Yakima River was different in the rural area of the Umptanum Creek compared to the urban area of the Wenas Creek.

I became interested in this idea when I read that certain chemicals dissolved in water could be harmful to people and wildlife. In our area, farmers and other citizens use lots of chemicals, many of which dissolve in irrigation or rain water and flow into nearby streams.

The information gained from this experiment could help attract citizens’ attention to the fact that we need to clean up the Yakima River and its tributaries to protect wildlife as well as human health.

HYPOTHESIS

My hypothesis was that the chemical levels will be lower in undeveloped Umptanum Creek rather than the more developed Wenas Creek.

I base my hypothesis on common sense and the law of gravity. There is most likely going to be more chemical water pollution in the Wenas Creek because it is a more developed area and people are often careless with harmful materials.


EXPERIMENT DESIGN

The constants in this study were:
-The amount of water collected at each site
-Depth of water that each sample was taken
-Distance from shore each sample was taken
-The chemical testing kits used
The manipulated variable was the location of the test site in either a developed or undeveloped area.
The responding variable was the amount of chemicals found in each test site sample.
To measure the responding variable I used chemical testing kits.


MATERIALS
QUANTITY ITEM DESCRIPTION
1 Thermometer
2 Pairs waders or hip boots
1 Liter Distilled water
1 Turbidimeter
1 One liter Imhoff cone
1 Nitrate test kit


PROCEDURES

1 Rinse sample tubes with water from the test site.
2 Take two .5 liter Depth and Width Integrated Samples from Umptanum Creek.
3 Test sediment with a one liter Imhoff cone.
4 Let sit for fifteen minutes.
5 Put rubber gloves on.
6 Gently mix water sample.
7 Rinse turbidity sample vial three times with sample water.
8 Fill the vial at least to the line with well mixed sample water.
9 Put into turbidimeter.
10 Push the Read button on the turbidimeter.
11 When done taking sample, rinse vial with distilled water.
12 Rinse sample tubes with water from a different test site.
13 Take two .5 liter Depth and Width Integrated Samples from Wenas Creek.
14 Test sediment with a one liter Imhoff cone.
15 Let sit for fifteen minutes.
16 Put rubber gloves on.
17 Gently mix water sample.
18 Rinse turbidity sample vial three times with sample water.
19 Fill the vial at least to the line with well mixed sample water.
20 Put into turbidimeter.
21 Push the Read button on the turbidimeter.
22 When done taking sample, rinse vial with distilled water.


Results
The original purpose of this experiment was to determine what the difference of the level of nitrates, turbidity, and suspended sediment was in a rural and suburban area. The results of the experiment were that Wenas Creek had higher levels of turbidity and nitrates, but Umptanum Creek had more suspended sediment.

Victoria Said:

Re: my middle school science project - please help......?

We Answered:

1. in the winter (in the northern hemisphere) earth is closet to sun and its summer in southern hemisphere.

2. its the inclination of the earth axis tipped away from the sun that causes the chagne in temperature of the season. The maxium extent of this tilt is shown on a global as the lines of TROPICs.

#. The earson is this. A fits amount of sunlight is aimed at the earth. as the earth tilts away the surface covered by that light increase somthe amount per sq mile decreases. Then when the earht is most up right the sunlight hits a smaller area ans is more intense. You see this as the sun being directly over head in summer and low on the horizon in the winter.

Lori Said:

re: my middle school science project - please help......?

We Answered:

Firstly - the Earth is closer to the Sun during the North hemisphere winter than it is during the North hemisphere winter. The variation in the orbit is small compared to the effect of axial tilt - good point to make in your project.
See under Orrery for models of the solar system

Bessie Said:

Effectiveness of differing types of research report for middle school sciences...?

We Answered:

Its good that you want to offer different types of research - not all students learn thru the old fashioned read and write approach.

Some of the students that are wanting the research papers may be thinking - it would be alot easier to cheat. (Look at how many students ask others to do their homework on this site). There also might be the kids that just do better reading and writing.

So why not add that to the project? Give them the project and have them write a report on it or give them a few choices - present an experiment, write and present a report, bring examples and a demonstration of a scientific theory.

Outline the criteria your looking for and let the students decide which one is best for them. (have them choose within two days of the assignment which one they want to do so they can't change their mind later).

Julia Said:

Any good science fair project ideas?

We Answered:

hi i am sending some links that might have some great ideals on it for you and you age range hope they helps.
good luck