8th Science - 9/22/14

https://docs.google.com/document/d/18hcXBlcYp99PefB_eI-Ge_zyokAWjaIWZ-YyjHBj3aQ/pub

Homework

9/24 - Copy and define vocabulary words in NB


9/25 -  Group of 4.  Each group will choose a different project.

Voltaic batteries come in all shapes and sizes, turning chemical energy into the electrical energy we need to power our cell phones, iPods, tablets, cars… you name it! These batteries seem pretty complicated, but you can make a real voltaic battery.  You need some vinegar, nails, copper wire, and an ice tray… you’re in for a lesson in circuits you’ll never forget.

Materials

• Distilled white vinegar
• 5 pieces of copper wire
• 5 galvanized nails
• Ice tray
• 1 LED light

OR

When you poke five, evenly-spaced wholes into the side of a bottle, they come out as five separate streams. That is, until you run your finger through the streams. Like magic, the five streams combine to form one! The principle at work is a force called cohesion, and the Water Twist is a great hands-on way to experience cohesion, polarity, and the properties of water.

Materials

• 1 liter bottle with cap.
• Thumbtack
• Water

OR

Homemade Rock Candy

Principles like sedimentation and supersaturated solutions. - 

Materials

• Cane sugar
• Water
• Drinking glass
• Pencil
• Food coloring
• String

OR

INVISIBLE SODA

Your pop disappears when you add milk, but what makes the coke vanish?

Milk goes great with a lot of things: cereal, cookies, cake, and pie. You know what's even more incredible to mix with milk? A big ol' bottle of soda! We know what you're thinking, "Soda and milk would be disgusting, together!" You're absolutely correct, but you aren't supposed to drink the mixture! Instead, watch the magic happen when you mix the two.

Materials

• 20 oz. bottle of regular (brown) soda
• 2% milk

Please let me know on Tuesday if you can get these supplies.  4 per group.