Does anyone have any cool modern science experiment project ideas for 7th-8th graders? plz help?

Question

Like I wanted to do what type of chocolate melts the fastest but somebody will probably do that and I want to do something that will appeal to my peer group(12-13yrolds) but still be easy and different. Should I just stick to the chocolate idea? plz help

Answer 1

the big thing on line right now is the dropping of Mentos Candy into the Diet coke bottle. It might be an interesting project to see why that happens. You can see videos about it on Youtube.com

Answer 2

A cool science experiment is Coke and Mentos. Drop a pack of Mentos in a 2 liter Diet Coke and watch it take off like a rocket. You can also try using a penny as well.

While this will bring a great amount of fun from students. I think a more practical science experiment would be one made from trying to achieve an objective. For instance, have students build model airplanes driven by rubberband propellers out of thin cardboards. Have this a competition for who can fly the farthest? Also, have each group that comes up with an idea make a proposal and theoretical tests for making it work prior of building it.

Good luck

Answer 3

Supplies:
I Copper coin (+)
:I:
:::I::: Potato or banana (Electrolytes)
:::::I:::::
::::::::::::::::
----------------------------Aluminum foil. (-)

The Copper: I use a penny.
You can use bare wire etc.

Electrolytes: You can use other fruit (orange, apple etc.)
I used 3-4 cells in series to get enough voltage to run LCD clock.




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How to Make a Potato Clock

You can find the Two Potato Clock kit for $20 or so in school science
catalogs. You supply two potatoes, connect some electrodes, and the clock runs
on electricity provided by the potato. You can also do this without buying the
kit. Many inexpensive LED clocks run on a 1.5-volt button battery (for
example, Radio Shack #63-736). To run it on two potatoes, you'll need:

* Two copper electrodes. A 10-cm length of thick (0.64 cm) copper ground wire
works well. You'll find it at hardware and home supply stores.

* Two zinc electrodes. Use large galvanized nails, also available from a
hardware or home supply store.

* Three alligator-clip wires (Radio Shack #278-1156).

* Two potatoes.

Now make a potato clock. Open the battery compartment of the clock and remove
the button battery. In the compartment, notice that there are two connections
for the battery marked plus (+) and minus (-). You'll connect the potato
battery to these two places. Let's call the potatoes A and B. Connect A and B
to the clock like this:

1. Insert a copper electrode and a zinc electrode into each potato, fairly far
apart.

2. Use an alligator-clip wire to connect the copper electrode of potato A to
the plus (+) connection in the clock.

3. Use an alligator-clip wire to connect the zinc electrode of potato B to the
negative (-) connection in the clock.

4. Use an alligator-clip wire to connect the zinc electrode of potato A to the
copper electrode of potato B.

That's it. If all went well, the clock is running and will run for a long
time. Our project student Jennifer started one in April and it was still going
strong at the end of the school year.

Answer 4

Here's an easy one for you. Every metal produces a distinctive color when burned. You can identify the metal by burning it.

Equipment needed:
Coffee Stir Sticks
Salt (Sodium Chloride)
Potassium Chloride
Calcium Chloride
Baking Soda
All of these are available at the grocery store

Dissolve the Salt in water. Place a Stick in the solution.
Repeat the process for each... potassium chloride... calcium chloride... baking soda... using a fresh bottle and stick for each.
Once the sticks are soaked with water, remove them and let them dry. Mark what is in each stick.

Now, burn the salt stick. Then the potassium stick. Then the calcium stick. Now, you know what each metal's color is when burned. Now burn the baking soda stick. You can identify which metal is in the baking soda.

Answer: Sodium

Have fun.

Answer 5

An easy one is the cost of burning light bulbs, we did a 25 watt a 40 watt and a 60 watt for an hour. Heres a site on science projects.
http://www.energyquest.ca.gov/projects/index.html

Answer 6

There is the old standby of seeing if diet coke is really different than regular coke. Get a can of diet coke and a can of regular coke. put them both into a bucket of water. The diet coke will float and the regular can of coke will sink. This is due to the weight of the sugar in coke. Diet Coke is truly different than regular Coke. Good Luck

Answer 7

Produce a diagram of how to convert used cooking oils into a usable fuel that cars and trucks can run on. Click on www.greasel.com and I promise you will win the science project because it is practical, workable and easy to demonstrate. A simple conversion kit can transform a gas engine into a greasel engine: http://www.greasel.com/General.html
Boaz.