Week+20

media type="youtube" key="2sKX20WhKS4" width="420" height="315"media type="youtube" key="VHgyOa70Q7Y" width="420" height="315"media type="youtube" key="cBeRMyB_PgU" width="560" height="315" Franklin followed these steps of an investigation:
 * Monday**
 * My** turn to SRE:

• Collect five objects made of different types of metal. • Place them on a large laboratory table. • Touch each metal object with a magnet and lift slowly. • Record observations.

Which of the following statements is Franklin most likely testing?

A.) All types of metal are attracted to magnets. B.) Each magnet can lift the metal object to the same height. C.) Larger magnets can pick up heavier metal objects than smaller magnets can. D.) Heavier metal objects are more attracted to magnets than lighter metal objects are.

**Your** turn to SRE: Claire followed these steps in an investigation:
 * Make playdough with sugar.
 * Make playdough with salt.
 * build a circut.
 * use the two types of playdough to close the circuit.
 * record your observations.

Which of the following statements is Claire most likely testing?

A.) The water in playdough will conduct electricity. B.) Playdough is a conductor of electricity. C.) Some mixtures will conduct electricity. D.) Some solutions will conduct electricity

Sonny wants to see which soil additive will make his bean plants grow the best. compost, fertilizer, lemon-lime soda, or potato skins. He mixes each additive into three pots of soil, plants each seed, and waters each plant. He then puts each plant on a tray and puts them near an open window.
 * Tuesday**
 * My** turn to SRE:

What would be the **Most** scientific way for him to record his data?

A.) Create a chart that shows how much water each plant used. B.) Wait two weeks and in a chart, write down the tallest plant. C.) Take a pictures of each plant as it sprouts and write down how many days each took to germinate. D.) For two weeks, observe each plant and create a chart that shows the height of each plant.

Brandon wants to see of more expensive batteries last longer because of the amount of chemicals used to produce them. He buys three identical flashlights as well as cheap dollar store batteries, inexpensive name brand batteries, and expensive name brand batteries.
 * Your** Turn to SRE:

What would be the **Most** scientific way for him to record his data?

A.) Observe and in a chart, write down the light that burns the longest. B.) Make a chart that compares the beginning and ending mass of each battery. C.) Complete the experiment three times make a list of longest and shortest burning bulbs and tell which battery lasts the longest to another student D.) Make a chart that compares the final mass of each of the batteries.

Jada read that plants compete for light, soil, and water. She designed and experiment where in one pot she planted two bean plant seeds, in another pot she planted five bean plant seeds, and in a third pot she planted ten bean plant seeds. She places all three pots in the same window and watered them with equal amounts of water. After two weeks, she counted and recorded the number of leaves on each plant in each of the three conditions.
 * Wednesday**
 * My** turn to SRE:

Which of the following is most likely the prediction she made before her experiment began?

A.) The ten plants had less leaves because they were competing against each other for light, soil, and water. B.) As the plants began to grow, the pot with the fewest plants grew more leaves and were taller because they had more resources to share between them. C.) The pot with the most seeds will grow taller and have more leaves than the others because they will evenly use the resources to grow. D.) The plants in pot "A" were 7 inches tall and each had 17 leaves.

Arniesha wanted to determine the effect of radiation and heat on the germination of radish seeds. On three different pieces of wet paper towels, she placed ten radish seeds. Each paper towel was placed in a zip-lock bag. One was taped to a window to get direct sun light, one was placed on a table near the window for indirect sun light, and the third was placed in the cupboard. Each day for two weeks, she observed and recorded her observations in a chart.
 * Your** Turn to SRE:

Which of the following is most likely Arniesha's inference she made at the end of two weeks?

A.) Seeds require just a small amount of heat and radiation from the in order to germinate. That is why seeds are usually planted under a layer of soil. B.) Only three of the ten seeds in direct sun light germinated. C.) Nine of the ten seeds that were in the cupboard began germinating after two days. D.) The seeds sitting on the table will germinate faster than the other seeds because plants require indirect sun light and heat in order to germinate.


 * Thursday**
 * My** turn to SRE:
 * interpret and analyze data to generate appropriate explanations based on that data**

Jaylen wanted to see if circumference  and mass affects the speed at which a hula hoop spins around. He three hula-hoops of different size and mass. He recorded his data in the chart below.

Based on his data, what is the best explanation for Jaylen to conclude?
 * Number of Spins in One Minute: **
 * ~ Hoop Size ||~ 2kg ||~ 4gk ||~ 6kg ||
 * = Trial 1 ||= 36 ||= 30 ||= 22 ||
 * = Trial 2 ||= 39 ||= 28 ||= 24 ||
 * = Trial 3 ||= 37 ||= 29 ||= 25 ||

A.) The hula-hoop with less mass was more fun to play with. B.) The greater the mass of the hoop, the greater the weight and the more the hula-hooper needs to push for the hoop to react and stay up. C.) The hula-hoop with more mass was more difficult to control. D.) The middle mass hula-hoop was just right for hula-hooping

Bralinsky wanted to see if the air pressure inside of a basket ball affected the height of its bounce. He inflated three basket balls at different air pressures and dropped each of them off of a ladder. As each ball hit the ground and bounced up, he measured the highest spot of each bounce. His data is shown below. 8psi ||= Ball 2 10 psi ||= Ball 3 12 psi || Based on his data, what is the best explanation for him to conclude?
 * Your** Turn to SRE:
 * =  ||||= **Basket Ball Bounce** ||=   ||
 * = **Pressure**
 * in PSI** ||= Ball 1
 * = **Bounce**
 * Height**
 * in inches** ||= 38 in ||= 42 in ||= 46 in ||

A.) As more air is added to the ball, the ball bounces higher due to greater potential energy stored by the air. B.) As the air pressure inside the ball increases, the higher the ball bounces. C.) There is not enough data to make a conclusion. More trials are required. D.) The amount of air inside of the basket ball has very little effect on the height of the ball's bounce.

Some people have a photographic memory and can memorize anything they see almost instantly! Wouldn't that make homework easy? Other people can remember almost anything they hear.
 * Friday**
 * My** turn to SRE:
 * the difference between an experiment and other types of scientific investigations**

What would be the best type of scientific investigation to figure out which kind of memory you have?

A.) Design a experiment where the number of things a person must remember changes each time and the person must tell how many they remember. B.) Create a test where people have to memorize a list of 7 objects they see and a list of 7 objects they hear to see how many they remember from each list. C.) Have people tell a story about an event that happened three years ago. D.) Show people two similar pictures and have them describe how they are different after you cover them up.


 * Your** Turn to SRE:

You've probably observed from your own personal experiences that some actions are contagious. Yawning is a great example. When one person in a room yawns, several other people usually do, too. Coughing, clearing your throat, these are other actions that often seem contagious. But what about smiling? Have you ever walked down the street and had a random stranger smile at you? Did it make you happy? Did you smile back?

What would be the best way to investigate if smiling is contagious or not?

A.) Smile at everybody at your house and see if they smile back. B.) Show people a happy picture and see if they smile while looking at it. C.) Frown at some classmates then smile to see if they smile too. D.) Take a walk around a park and keep track of how many people smile at you, and whether those numbers change based on whether you smile at them or not.