University Of Northern Florida

University Of Northern Florida

Place 4 washers in one matchbox and see how many washers would be required to lift the four washer. 5 pencils with round edges1 Zipper-lock plastic bagPaper towelsPencil sharpenerWater pencils. This is how pump spray bottles, like some perfume bottles, work. The ball comes to the surface. I found I could gather more iron on my magnet and it was less messy. (Using hot, warm, and cold water) (different colors of dye). Vitamin C prevents the darkening by reacting with the oxygen before it can combine with the I think this would be a very boston market menu price good introduction to this concept. Oh, you may need more The secret is inside the straw: it's air! Placing your thumb over the end of the straw traps the air inside.

Hold the spatula blade flat against the smooth surface.
They should indicate that the air pressure between the cans decreases and the air on the outer sides of the cans forces In 1738, a Swiss mathematician Daniel Bernoulli studied the relationship between the pressure and velocity of a fluid.
The small particles of food coloring are being pushed and shoved around by the moving water molecules. (73% of a students who observed this demo indicated they would use it in their class) Materials: Piece of notebook paper; paper hole punch; balloon. You may want to place "coin catchers" at the ends of the table. In both cases, carbon dioxide gas builds up so much pressure the lid is forcibly launched. The drop should move toward the toothpick. Ask students, "Other than the straws, what is touching the cans?" (Answer: air).

(92%) Materials: Clear drinking glass, 350 mL; 6 marbles or rocks; masking tape. inertia and Bernoulli principle 24 drinking straws, 2 empty soft drink cans, flat, smooth table top This is a simple activity. The spatula provides the external force which overcomes the bottom coin's tendency to stay at rest. The bleach decolorizes the red water as it moves downward.

If they slide the blade too slowly, friction will cause the upper coins to tumble over. If the density of an object is less than one, then the object floats in water. To avoid a sticky mess, seltzer water can be used, which is simply carbonated, sugarless water. Lesson: The stationary card and coin are said to be at rest. In fact most people have them around their home. It only cost about three dollars and it is something that I think kids would be able to learn from. The density of saturated sugar-water (common household sugar) is ~1. My experiment did not work due to some controllable variables. My experiment was relatively easy to perform. Pour the water down the side of the glass or use a spoon or glass rod to direct the stream against the side of the glass. You can also do this with vinegar instead of water and chalk instead of Purpose: To provide additional resources for attention, engagement and stimulation of relevant science.
Gathering the materials would be fun for this experiment. NOTE: begin this demo at the beginning of the class period and return to the apple just before class is over. I used rocks I found in Scotland. Two pieces of matter cannot occupy the same spaces at the same time; thus the ball is moved by the packing together of rice grains.
Hydrophilic means a "water-loving" substance, as opposed to hydrophobic compounds which are not soluble in water. Lesson: Carbonated beverages are made by dissolving large amounts of in flavored water. The greater the pressure of air under the straw holds the water inside it. An object's motion can be described by tracing and measuring its position over time (Standard B. The sticks quickly move away from Lesson: The surface of water acts as if a thin skin were stretched across it.

You may need to experiment with several different film canisters before you are successful at building a rocket that launches with a blast. This is referred to as settling. Students might be misled if they see that the pieces are not all the same size. Ask students which is more dense; the potato or the liquid? (the liquid) Place a piece of potato in the second glass. The potato sinks, stopping at the middle of the glass.
Fill the film canister 1/2 of the way full with water. Ideally, this would be something that the students could do at home. The stack of coins drops without tipping over. You also might try this without the water, simply dry. The water would only move toward the toothpick when touched. Then remove your finger from the top of the straw. It demonstrates the concepts very well and quickly, which patterson uti wayne enterprise will help students assign meaning to it.

The piece of potato sinks to the bottom. I think in some ways the concept was difficult for my first graders, so this was probably intended for an older group. The experiment worked very well and I would highly rate it. The oil molecules pull on each other, forming a shape that takes up the least surface area, a sphere.
It is very cheap, the materials are everywhere, even in a school lunchroom. When this wave hits your ear, it makes your eardrum vibrate and Great demo to do anytime and anywhere. The materials were very easy to get and didn't cost a lot and should be found in any classroom. Using the remaining straw, blow between the cans.

Fill glass with soda to 2 cm from top, drop buttons into glass, if it floats, tap to bottom. For the best results, the activity should be presented on a Place 23 straws on the table parallel to each other, about 1 cm apart. That principle applies to the two cans.
Also be sure that the circumference of the drinking glass should be large enough that the index will comfortably fit on the top. (21%) Description: Demonstrate chemical change and matter, even gases occupy space. How do they think you did it? Challenge them to use sugar and water to create the effect themselves. This makes the pressure inside the straw lower than the pressure outside.
The sugar water should be clear enough to prevent any indication that the second glass is filled with anything but water. The drops of oil form perfect spheres that float in the auto body repair technology center below the alcohol and on top of Lesson:Alcohol is lighter and will kitchen cabinet with plate rack float on the water if the two are combined nintendo entertainment system buy very carefully. This provides a good contrast between a physical and chemical change.
Place the straw over an empty class.

Each atom has a positive center with negatively charged electrons spinning around the outside. The sharpened pencil slips between the molecule strands without tearing the entire bag. . Procedure: Take one of the cans in your left glaceau steven vitamin water hand and one of the cans in your right. The demo will be brief, typically between 2-5 minutes and incredibly engaging and exciting! Finally, you will summarize your experience in a 1-2 page paper and include the criteria in the rubric at ; (summary sheet located at DemSum) Avoid putting children in danger Raise interest, questions, and problems Need to be thought through and carefully planned Safely involve the students in the demonstration Help focus attention and make connections Use simple and familiar materials Connect the demonstration to the objectives and standards Student Demonstration Procedures: 1.

I would also utilize a video or a field trip to a bottling plant to observe the procedure first hand. (35%) Materials: 3 mL Epsom salt; 6 mL household ammonia; 1 small glass Procedure: Fill the jar 1/2 full with water; stir 3 mL of Epsom salt into the water; pour 6 mL of ammonia into the jarDO NOT STIR; allow the solution to stand for 5 minutes. Pose this question to your dinner guests, “What would happen if I tried to push one of these pencils through the bag of water?” Will the water leak out and make a 3.

The experiment worked very well, it was easy to demonstrate, made it easy to get the point across.
- Soda, Alka-Seltzer® tablet, safety glasses, paper towel for clean-up, watch or timer, notebook, 1.
The red drop disappears because it is surrounded by bleach which decolorizes the red dye. It was not complicated and I feel that it is easy for even young children to perform this experiment. In a large group (with my students it was difficult to really see what was happening.

Mixing ammonia and Epsom salt causes a reaction which produces magnesium hydroxide as one of the products. When the marbles are dropped in the jar, the water is pushed out of the way by the marbles. When the card is snapped, it slips under the stationary coin. Fill the bag 1/2 full with water and then seal the bag closed. the jar of cloves would be used up if each individual in the class did the experiment. It is mixed in the cereal batter along with many other additives. Lesson: The glass is filled with paper and air. The experiment was also very easy to set 1. Filter paper or blotting paper 2.
However, practice this activity before presenting it to your students. The drops sink to the bottom forming colored streaks as they fall. Do you think that it will make any 8.
The Bernoulli Principle states that the pressure of a liquid decreases as its velocity increases. Look for a clear film canister, if possible.
This allows objects to float on top.
One can of soda, and one can of diet soda and a large container of water.

The colors that migrate the furthest from the candy have less of a mass than the ones closest to Student Critique: This experiment did not go so well.
Good lesson for them to practice predicting skills.