Unveiling Earth's Structure: Key Concepts in Density Study

Grab Bag Density Particle Density and Size Earth Structure $100 $100 $100 $100 $200 $200 $200 $200 $300 $300 $300 $300 $400 $400 $400 $400 $500 $500 $500 $500

Gab Bag Density Particle Density and Size Earth Structure $100 $100 $100 $100 $200 $200 $200 $200 $300 $300 $300 $300 $400 $400 $400 $400 $500 $500 $500 $500

Gab Bag $100 • Which of these statements relates to this situation? • A. Science can be used by many people, not just scientists • B. Science can be used by scientists but not by most people • C. Science is too complicated to be used to solve problems • D. Science is not useful in everyday life

Gab Bag $200 • A gold panner shakes a mixture of mud and water in a gold pan. He looks for gold at the • bottom. Why? • A. gold is very dense and sinks • B. gold dissolves in water and is carried there • C. gold is hard to find because it can “hide” • D. gold is repelled by other Earth materials

Gab Bag $300 • Which answer below best describes the future of models of Earth’s structure? • A. Models will probably stay the same because scientists have learned all there is to know about the structure of Earth. • B. Models will probably stay the same because scientists don’t like to create new models. • C. Models will probably change because scientists like to change things. • D. Models will probably change because new technology will provide better information about the structure of Earth.

Gab Bag $400 • If you went to a medical clinic to find out your body volume, how would they do this? • A. With a tape measure, they would measure your arms, stomach and thighs. • B. They would have you stand on scales and read your weight. • C. They would put you in a tank to determine how much water you displace. • D. Have you keep a monthly record of increase or decrease in your clothes sizes.

Gab Bag $500 • Knowing that antifreeze is less dense that water, how could you use this fact to find out if your family car had any antifreeze in the radiator? • A. Drain some radiator liquid and record its temperature to see if it is cooler than water. • B. Drain some radiator liquid and pour it on iron to see if the iron rusts faster than without the liquid. • C. Drain some radiator liquid, smell it, and compare the smell to oil. • D. Drain some radiator liquid and compare its weight to the weight of the same amount of water.

Gab Bag $100-Answer • A. Science can be used by many people, not just scientists

Gab Bag $200-Answer • A. gold is very dense and sinks

Gab Bag $300-Answer • D. Models will probably change because new technology will provide better information about the structure of Earth.

Gab Bag $400-Answer • C. They would put you in a tank to determine how much water you displace.

Gab Bag $500-Answer • D. Drain some radiator liquid and compare its weight to the weight of the same amount of water

Density $100 • What would you use to determine the mass of an object? • A. Meter stick • B. Graduated cylinder • C. Scale in pounds • D. Triple beam balance

Density $200 • A liquid is found to have a volume of 75 mL in a graduated cylinder. When placed on a balance, the liquid and graduated cylinder have a mass of 125 g. The empty graduated cylinder has a mass of 50 g. What is the density of the liquid? • A. 0.1 g/mL • B. 1.0 g/mL • C. 2.2 g/mL • 22.0 g/mL Daily Double

Density $300 • Which is the correct formula for density? • A. Mass divided by Volume • B. Mass times weight • C. Volume divided by mass • D. Volume times mass

Density $400 • Why does ice float on water? • A. it is colder than water • B. it is less dense than water • C. it is harder than water • D. it is lighter than water

Density $500 • A student has two objects. Object 1 has a mass of 10 g and a volume of 5 cm 3. Object 2 has a mass of 100 g and a volume of 200 cm 3. If both objects are placed in water, which will float and why? • A. Object 2 will float because it is less dense than water • B. Object 2 will float because it has more mass than object 1 • C. Object 1 will float because it is less dense than object 2 • D. Object 1 will float because it has less mass than object 2

Density $100-Answer • D. Triple beam balance

Density $200-Answer • B. 1.0 g/mL

Density $300-Answer • A. Mass divided by Volume

Density $400-Answer • B. it is less dense than water

Density $500-Answer • A. Object 2 will float because it is less dense than water

Particle Density and Size $100 • When mixed, what would be the order of the substances starting from the bottom and going up? • A. rock, aluminum, plastic, water, oil • B. rock, aluminum, water, plastic, oil • C. rock, plastic, oil, water, aluminum • D. rock, oil, aluminum, plastic, water

Particle Density and Size $200 • Gold panning separates gold flakes from stream gravel by shaking the mixture in a pan and • scraping the gravel layers off. Why are the tiny gold particles found on the bottom on the pan? • A. They are larger than the gravel • B. They are denser than the gravel • C. They are brighter in color than the gravel • D. They are harder to find than the gravel

Particle Density and Size $300 • In winter, a layer of cold air settles in the valleys and warmer air is often found higher in the • mountains. What might account for this condition? • A. There is more warm air than cold air. • B. There is more cold air than warm air. • C. Cold air is less dense than warm air. • D. Cold air is more dense than warm air.

Particle Density and Size $400 • A student shakes a jar with a mixture of sand types. Instead of mixing, the sand grains • separate into layers. Why? • A. The grains are different colors. • B. The grains have different shapes. • C. The grains have different densities. • D. The jar has a round shape.

Particle Density and Size $500 • How has technology helped earth scientists measure the density of various kinds of rocks? • A. Lasers help see into rocks and detect the most dense ones. • B. Seismic waves reflect off of more dense rocks differently than less dense rocks. • C. Sonar is used to identify the density of certain metamorphic rocks. • D. Simple observations allow us to determine if rocks are sedimentary, igneous or metamorphic

Particle Density and Size $100-Answer • A. rock, aluminum, plastic, water, oil

Particle Density and Size $200-Answer • B. They are denser than the gravel

Particle Density and Size $300-Answer • C. Cold air is less dense than warm air.

Particle Density and Size $400-Answer • C. The grains have different densities.

Particle Density and Size $500-Answer • B. Seismic waves reflect off of more dense rocks differently than less dense rocks

Earth Structure $100 • Earth’s interior is divided into layers. What are the four divisions, in order, of least dense to most dense? • A. Atmosphere, Surface, interior, outside • B. Crust, mantle, outer core, inner core • C. Mantle, Core, Atmosphere, Center • D. Nucleus, Crust, Mantle, Core

Earth Structure $200 • Why does air float above the Earth’s surface? It is • A. denser and rises • B. less dense and sinks • C. less dense and rises • D. the same as crust

Earth Structure $300 • You are given the following materials and their densities and then asked to construct a model of the earth consisting of a core, mantle, crust, water, and air. Based on density, which material would be the best choice to represent the core of the Earth? • A. cotton • B. clay • C. aluminum foil • D. nickel

Earth Structure $400 • Which of the following statements best explains why earth is layered in the following order: air -> water -> crust -> core? • A. Things in nature like to order themselves by color, red to the bottom and blue to the top • B. Things in nature like to order themselves by density, most dense to the bottom and least dense to the top • C. Things in nature like to order themselves by particle size, largest particles to the bottom and smallest particles to the top • D. Things in nature like to order themselves by temperature, hottest to the bottom and coolest to the top

Earth Structure $500 • Pat is given the following items: a rock, sand, water, and metal bar. Pat calculates the density of each object. The results are shown below. • Rock = 3.2 g/mL • Sand = 1.9g/mL • Water = 1.0g/mL • Piece of metal = 6.5g/mL • Pat then puts all of the items into a jar and shakes it up. Pat lets the jar settle for 5 minutes.What would be the expected order of the items going from the top of the container to the bottom? • A. rock, sand, water, metal • B. metal, rock, sand, water • C. water, sand, rock, metal • D. sand, metal, water, rock

Earth Structure $100-Answer • B. Crust, mantle, outer core, inner core

Earth Structure $200-Answer • C. less dense and rises

Earth Structure $300-Answer • D. nickel

Earth Structure $400-Answer • B. Things in nature like to order themselves by density, most dense to the bottom and least dense to the top

Earth Structure $500-Answer • B. metal, rock, sand, water

Final Jeopardy • Earth Model

Final Jeopardy • You are building a model of Earth based on the density of layers. What materials would you use for each layer? Include water and atmosphere. (Hint: are they liquid, gas, solid, sticky, dense…) You have 1 minute to consult…

Final Jeopardy • You are building a model of Earth based on the density of layers. What materials would you use for each layer? Include water and atmosphere. (Hint: are they liquid, gas, solid, sticky, dense…) You have 30 seconds to consult…

Final Jeopardy • You are building a model of Earth based on the density of layers. What materials would you use for each layer? Include water and atmosphere. (Hint: are they liquid, gas, solid, sticky, dense…) You have 15 seconds to consult…

Final Jeopardy • You are building a model of Earth based on the density of layers. What materials would you use for each layer? Include water and atmosphere. (Hint: are they liquid, gas, solid, sticky, dense…) Time Is Up

Final Jeopardy-Answer • Atmosphere - dry ice - gas • Water - Water or Jell-O - liquid • Crust - cookies - solid • Mantle - molasses - thick plastic liquid • Outer core - hot fudge - liquid • Inner core - rock candy - solid

Jeopardy • Thank you for playing another fine round of America’s favorite question and answer game.

Unveiling Earth's Structure: Key Concepts in Density Study