Standing on one foot Maria stood on her

Standing on one foot �Maria stood on her bathroom scale with two feet. She read her weight on the scale. She then lifted one foot. Circle what you think happened to the reading on the scale when she stood on one foot. �It showed an increase in weight �It showed a decrease in weight �Her weight stayed the same �Explain your answer

Is it “Fitter”? Natural selection is sometimes described as “survival of the fittest. ” Four friends were arguing about what the phrase means. � Dora: ‘fit’ means bigger and stronger. � Lance: It means more apt to reproduce. � Felix: It means able to run faster. � Ed: It means more intelligent. �Vol 4 -16

Wet Jeans Sam washed his favorite pair of jeans. He hung the wet jeans on a clothesline outside. An hour later the jeans were dry. 1. 2. 3. 4. 5. 6. It soaked into the ground It disappeared and no longer exists. It is in the air in an invisible form. It moved up to the clouds. It chemically changed into a new substance It broke down into atoms of H and O

Talking about gravity Two friends were talking about gravity. �Ben said, “Gravity needs an atmosphere or air. If there is no air or atmosphere, there will be no gravity. ” �Kelly said, “Gravity doesn't need an atmosphere or air. If there is no air or atmosphere, there will still be gravity. ” Which friend do you agree with? Why?

Rotting Apple �Six friends argued about why an apple on the ground eventually rots away and disappears. This is what they said: �Anna: “I think it is just something that happens over time. ” �Selma: “I think small organisms use it for energy and building material. ” �Felicia: “I think the atoms and molecules in the apple just break apart. ” �Logan: “I think wind and water soften it, and it dissolves into the soil. ” �Eli: “I think water and air rot it, then small animals come and eat the rest. ” �Jack: “I think it gets old and breaks apart into pieces too small to use. ” Which student do you agree most with and WHY?

Objects and Temperature �Taz and Kyle are comparing the temperature readings of four different objects: � Blocks of wood � Metal tray � Wool hat � Glass plate �They place the objects on a table in their science classroom and leave them overnight. A thermometer is attached to each object. The next day they recorded the temperature of each object at the same time. �What statement best describes your prediction about the objects? � None of the objects will have the same temperature � Two of the objects will have the same temperature � Three of the objects will have the same temperature � All of the objects will have the same temperature

The Sun �What are the 6 components of the sun and their make-up or function? �Write a description of each of the 6 components. � Be sure to include their make-up and or function.

Nails in a Jar Jake put a handful of wet, iron nails in a glass jar. He tightly closed the lid and set the jar aside. After a few weeks, he noticed that the nails inside the jar were rusty. Which sentence best describes what happened to the total mass of the sealed jar after the nails rusted? 1. The mass of the jar and its contents increased. 2. The mass of the jar and its contents decreased 3. The mass of the jar and its contents stayed the same.

Global Warming Seven students argued what they thought were major human causes of global warming. This is what they thought were caused that could be attributed to humans: �Maria: acid rain �Natalie: burning coal �Tessa: the fuel we use in our cars �Blaine: using leaded gasoline instead of unleaded �Anita: toxic chemicals in air pollution �Raul: the thinning of the Earth’s ozone layer �Van: water pollution Choose the student(s) you agree with and explain why you agree.

Is It Matter? �Listed below is a list of things that are considered matter and things that are not considered matter. Circle each of the things that you consider to be matter. �Rocks baby powder milk air light �Love cells atoms fire smoke �Mars Jupiter steam heat sound waves � salt dust water stars rotten apple �Bacteria oxygen gravity electricity �Magnetic force dissolved sugar

Iron Bar Nate measured an iron bar. He put the iron bar in the hot sun. When he measured the bar after it had been in the sun, it was slightly longer. Which sentence best describes what happened to the iron atoms after the bar was left in the hot sun? �The number of atoms increased. �The size of the atoms increased �The space between each atom increased �The air in the spaces between the iron atoms expanded �Some of the atoms began to melt and spread out further in the bar �The heat caused the atoms to flow around the bar and pushed it outward.

Giant Sequoia Tree The giant sequoia tree is one of the largest trees on Earth. It starts as a small seedling and grows into an enormous tree. Five children can stretch their arms across the width of the trunk of one of the large sequoia trees! Where did most of the matter that makes up the wood and leaves of this huge tree originally come from? 1. 2. 3. 4. 5. 6. 7. Sunlight Water Soil Carbon dioxide Oxygen Minerals chlorophyll

Batteries, Bulbs, and Wires Kirsten has a battery and a small bulb. She wonders how many strips of wire she will need to connect the battery and the bulb so that the bulb will light. What is the smallest number of wire strips Kirsten needs to make the bulb light up? �One strip of wire �Two strips of wire �Three strips of wire �Four strips of wire. Explain your thinking about how to light the bulb. Draw a picture to support your explanation.

Sam’s Puppy Sam brought home a tiny puppy. Her puppy grew. Four weeks later, her puppy had grown to twice its original size. Which answer below best explains why Sam’s puppy got bigger? �The number of cells in the puppy’s body increased. �The puppy’s body absorbed the food it ate. �The puppy’s body cells grew larger as it got older. �Parts of the puppy’s body stretched out more. Describe your thinking. Provide an explanation for your answer.

Chocolate Lab Based upon what you observed during the chocolate rock lab. When was each part of the rock cycle symbolize? List the three categories and describe how we used different steps of the lab to demonstrate each part.

Mineral Hunt During your lab you utilized first hand observations of the properties/characteristics of different mineral to determine their identity. 1. Why does this method work? 2. How could you use this process in your everyday life? 3. Explain your answer. (Be specific, blanket answers will no be accepted. )

Baby Mice �Royce’s pet mouse had babies. Five of the babies were black and two were white. The father mouse was black. The mother mouse was white. Royce and his friends wondered why the mice were different colors. These were their ideas: � Lacey: Baby mice inherit more traits from their fathers than their mothers. � Alexa: The baby mice got half their traits from their father and half from their mother. � June: Male traits are stronger than female traits. � Royce: Black mice have more traits than white mice. � Tiffany: The black baby mice are probably male and the white mice are female. � Lydia: Parent’s traits like fur color don’t matter- nature decides what something will look like. � Billy: Blood type determines what traits babies will have. �Which friend do you most agree with and why? Explain your answer.

What’s in the Bubbles? Hannah is boiling water in a glass tea kettle. She notices bubbles forming on the bottom of the kettle that rise to the top and wonders what is in the bubbles. She asks her family what they think, and this is what they say: Dad: “They are bubbles of heat. ” Calvin: “The bubbles are filled with air. ” Grandma: “The bubbles are an invisible form of water. ” Mom: “The bubbles are empty-there is nothing inside them. ” Lucy: “The bubbles contain oxygen and hydrogen that separate from the water. ” Which person do you most agree with and Why? Explain

Warming Water Two friends put a bowl of very cold water outside on a hot sunny day. The sun warmed the water. They wondered about the energy of the water. This is what they thought: �Ted: “The very cold water had energy. The Sun provided additional energy to warm the water. ” �Amber: “The very cold warm water did not have energy. The energy in the warm water came from the sun. ” • Vol 4 -7

Rock Cycle and you As a class we have been investigating how the rock cycle affects the Earth in terms of geologic impact. �However, how could different aspects of the rock cycle effect your life now or in the future? �Explain your reasoning.

Is It a System? Write down all items that you think are systems. Explain the criteria you used for being considered “a system. ” Vol 4 -11 Aquarium Digestion Cell phone Pile of sand Food web A+B=C Earth Hurricane Electrical circuit Grasshopper Graph Water cycle Volcano Seed Human body Soil Box of Nails Density=Mass / Volume Ocean Earth and Moon

Biological Evolution Four friends were discussing the meaning of the term biological evolution. This is what they said: � Mario: “I think it is another term for natural selection. ” � Sally: “I think it mainly explains how life started. ” � Cameron: “I think it mainly explains how life changed after it started. ” � Paz: “I think it includes both how life started and how it changed after it started. ” Who do you agree with? Explain what you think biological evolution is. � Vol 4 -13

Chicken Eggs The students in Mrs. Bartol’s class were studying how chickens develop from an egg. The students put a dozen freshly laid, fertilized chicken eggs in an incubator. They wondered what would happen to the mass of an egg as the chick inside developed. � Group A: The egg will gain mass. An egg’s mass is more just before hatching than when the egg was laid. � Group B: The egg will lose mass. � Group C: The mass will stay the same. Explain which group you agree with and why. � Vol 4 -14

Pennies A shiny new penny is made up of atoms. Write down all of the things on the list that describes the atoms that make up the penny. Explain why you selected the things you selected. vol 3 -1 hard solid Very small Always moving warm Made of smaller particles Contains mostly empty space soft Coppercolored Has mass Does not move Shiny Cold dull happy

Thermometer Mr. Fox placed a thermometer in a jar of very hot water. His students watched what happened to thermometer. Immediately the level of the red liquid in thermometer went up. His students disagreed about why the red liquid in thermometer rose when thermometer was placed in the hot liquid. � John Paul- “The hot water pushed it up. ” � Troy- “The heat inside thermometer rises. ” � Elizabeth- “The air inside thermometer pulls it up. ” � Molly-”The molecules of the red liquid are further apart. ” � Greta- “The number of molecules in the red liquid increased. ” � Jim- “The molecules of the red liquid are getting bigger. ” � Vol 3 -3

Is it made of molecules? Bread Protons Water Atomic nucleus Milk Egg Atom Seed Bacteria Skin DNA Cell membrane Cloud Oil Worm Protein Sugar Flower Chromosome Leaf Electrons Blood Air Cell nucleus Mushroom fruit Brain cell Describe your criteria for determining if something is made of molecules. Vol. 1 -11

Is it food for plants? Organisms, including plants, need food to survive. Circle things you think plants use as food. Sunlight plant food from A garden store Sugar Carbon dioxide Minerals Fertilizer Soil Water Leaves Oxygen Chlorophyll vitamins Explain what your criteria was for determining if it is plant food or not. Vol 2 -15

Is it melting? The list below involves situations that cause changes in materials/ The materials are italicized. Write down the situation in which the italicized materials undergo melting. 1. 2. 3. 4. 5. 6. 7. 8. 9. Putting a bowl of frozen ice cream in the sun. Sawing wood to make sawdust. Dissolving salt in water. Adding a Life. Saver candy to a glass of warm water. Water evaporating from a pan. Dissolving a sugar cube in a cup of hot tea. Pouring vinegar on baking soda. Sucking on a lollipop or other hard candy. Holding an ice cube in your hand. Explain your opinion, and describe your criteria for melting. Vol. 1 -9

Respiration Write down all of the organisms on the chart that use the process of respiration. Explain your rational. Vol 3 -17 Human Frog eggs Fish Germinating seed Worm Bacteria Butterfly larva inside a chrysalis Grass Mushroom Chick inside an egg Horse Single-celled pond organism Duck Tomato plant Human body cell Apple tree honeybee mice Corn plant kitten

Camping Trip Five friends were camping in the north woods. It was a clear night with mild weather conditions. Sunset was at 9: 14 pm. Sunrise was at 5: 22 am. The five friends wondered when it would be coldest as they slept under the stars. � Colin: “I think it will be coldest right after the Sun sets. ” � Ed: “I think it will be coldest at midnight. ” � Jeri: “ I think it will be coldest around 3: 00 am. ” � Emma: “ I think it will be coldest at the beginning of sunrise. ” � Kit: “ I think it will be coldest a few hours after sunrise. ” Which person do you agree most with and why? Explain your answer. Vol. 4 -19

Day, Month and Year �Define in your own words… �Day �Month �Year

Volcanoes One a blank piece of paper…. Describe three basic types of volcanoes. Be sure to discuss how they are formed and what are there major characteristics. DO NOT COPY IT OUT OF YOUR BOOK. DO NOT COPY OFF OF YOUR NEIGHBORS!!

Is it a Rock? What is a rock? How do you decide if something is a rock? On your paper make a chart that organizes rock and none rock items. Cement block Dried mud Hardened lava Asphalt Glass Piece of clay pot Coral Limestone Iron ore Concrete Coal Brick Gravestone Marble statue granite Explain your thinking! What criteria did you follow to determine is an item “is” or “is not” considered a rock. vol. 2 -21

Solids and Holes Lance had a thin, solid piece of material. He placed the material in water and it floated. He took the material out and punched holes all the way through it. What do you think Lance will observe when he puts the material with holes back in the water? It will sink It will barely float. It will float the same as it did before the holes were punched in it. 4. It will neither sink nor float. It will bob up and down in the water. Explain your thinking. Describe the “rule” or reasoning you used to make your prediction. Vol. 2 -4 1. 2. 3.

Epicenter There has been an earthquake, it has registered on three different seismographic stations. How could you determine the epicenter of the earthquake using only the three seismographic readings? Explain your answer.

Plants in the Dark and Light Four friends wondered how light affected the growth of plants. They decided to test their ideas using young bean plants. One set of plants was put in a dark closet for eight days. The other set of plants was put on a shelf near a sunny window for eight days. The friends then measured the height of the plants after eight days. This is what they predicted. �Carl: I think the plants in the dark closet will be the tallest. �Monique: I think the plants by the sunny window will be the tallest. �Jasmine: The plants will be the same height. �Drew: The plants in the closet will stop growing and die. Explain why you selected the answer that you did. Vol. 2 -14

Where would it fall? Six friends were talking about asteroids and meteorites that could fall to the Earth. The friends wondered where an object from space would most likely fall. This is what they said: �Maya: “It has the greatest chance of landing in a desert. ” �Elsa: “It is most apt to land where humans are living. ” �Walter: “ It will most likely land in an ocean. ” �Mac: “It will probably land on an ice-covered area. ” �Amber: “Chances are it will land on the largest continent. ” �Evan: “Most likely it will land in a body of freshwater. ” Which person do you agree with? Explain your reasoning. Vol. 4 -22

Digestive system Six friends were talking about the function of the digestive system. This is what they said: �Mina: “I think the main function is to release energy from food. ” �Manny: “To help you breath. ” �Sasha: “To break food down into molecules that can be absorbed by cells. ” �Harriet: “The main function is to break food down in the stomach into small pieces of food that can be used by the body. ” �Todd: “To carry bits of food and nutrients to all the different body parts. ” Who do you agree with? Explain your reasoning. Vol. 4 -18

Mixing Water Melinda filled two glasses of equal size half-full with water. The water in one glass was 50 degree Celsius. The water in the other glass was 10 degrees Celsius. She poured one glass into the other, stirred the liquid, and measured the temperature of the full glass of water. What do you think the temperature of the full glass of water. 1. 20 degrees C 2. 30 degrees C 3. 40 degree C 4. 50 degree C 5. 60 degree C Explain your thinking. Describe the “rule” or reasoning you used for your answer. Vol. 2 -11

Mountain Age Mountain A is 4, 800 ft. tall, looks smooth and rounded, and is located in North America. Mountain B is 19, 280 ft. tall, looks sharp and jagged, and is located in South America. Both mountains were originally formed by the uplifting of the Earth’s crust millions of years ago, are composed of similar materials, and are found in similar climate conditions. 1. 2. 3. Mountain A is probably younger then B. Mountain A is probably older then B. Mountain A and B are the same age. Which statement best describes your opinion about the age of the mountains based upon it’s physical appearance. Provide a justification for your answer.

Lemonade A glass of unsweetened lemonade weights 255 grams. A spoonful of sugar is weighted before stirring it into the lemonade. The sugar weights 25 grams. Predict how much you think the sweetened lemonade will weight after you stir in the sugar. It will weight…. 1. slightly less than 255 g but more than 230 g. 2. Slightly more than 255 g but less than 280 g. 3. 230 g. 4. 280 g. 5. The same: 255 g.

Apple in the Dark. Imagine you are setting at a table with a red apple in front of you. Your friend closes the door and turns off all the lights. It is completely dark in the room, and no light what so ever may enter the room. You will…. 1. not see the red apple, regardless of how long you are in the room. 2. see the red apple after your eyes have had time to adjust to the dark. 3. see the apple after your eyes have had time to adjust to the darkness, but you will not see the color red. 4. see only the shadow of the apple after your eyes have adjusted to the darkness. 5. see only a faint outline of the apple after your eyes have had time to adjust to the darkness. Describe your reasoning. Vol. 1 -2

Can it Reflect Light? Make a list on your paper of all of the items that reflect light. Then describe your criteria for reflection. Vol. 1 -1 water Gray rock Leaf Mirror Glass Sand Potato skin Wax paper Tomato soup Crumpled paper Shiny metal Dull metal Red apple Rough cardboard The Moon Rusty nail Clouds Soil Wood Milk Bed sheets New penny Old tarnished penny Aluminum foil

Does it have a life cycle? List all of the organism that go through a life cycle. Explain your criteria for a life cycle. vol. 3 -14 frog butterfly grasshopper fern shark Bean plant Snake Cow Mushroom Grass Earthworm Snail Mold Spider Daisy Chicken Maple tree Human Beetle Crab Moth Mouse Lizard horse

Floating Logs A log was cut from a tree and put in water. The log floated on its side so that half the log was above the water surface. Another log was cut from the same tree. This log was twice as long and twice as wide. How does the larger log float compared with the smaller log? 1. More than half of the larger log floats above the water surface. 2. Half of the larger log floats above the water surface. 3. Less than half of the larger log floats above the water surface. Explain your reasoning.