https://padlet.com/wendychen18/fddt88vqxfxb Explain each of the scenarios stated below with your knowledge of density. en-us 2018-02-28 06:40:11 UTC 2018-03-17 07:25:13 UTC hello@padlet.com wendychen18 https://padlet.com/wendychen18/fddt88vqxfxb/wish/236269406 Density = Mass / Volume
For a constant mass object, as
Volume increases, density decreases.
Volume decreases, density increases. ]]> 2018-02-28 06:42:09 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/236269406 wendychen18 https://padlet.com/wendychen18/fddt88vqxfxb/wish/236269523 Explain how a hot air balloon works.

]]> 2018-02-28 06:42:44 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/236269523 wendychen18 https://padlet.com/wendychen18/fddt88vqxfxb/wish/236269584 Explain why egg sinks in water but float in salt water.]]> 2018-02-28 06:43:19 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/236269584 wendychen18 https://padlet.com/wendychen18/fddt88vqxfxb/wish/236269683 Explain how lava lamp works.]]> 2018-02-28 06:43:55 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/236269683 https://padlet.com/wendychen18/fddt88vqxfxb/wish/239021782 A lava lamp works by having a substance of a higher density mixed with a substance of a lower density.]]> 2018-03-07 07:47:48 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/239021782 https://padlet.com/wendychen18/fddt88vqxfxb/wish/239022358 A hot air ballon works as it is less dense than the air.]]> 2018-03-07 07:50:03 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/239022358 https://padlet.com/wendychen18/fddt88vqxfxb/wish/239022557 The egg floats in salt water as it is less dense than the salt water.]]> 2018-03-07 07:50:59 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/239022557 https://padlet.com/wendychen18/fddt88vqxfxb/wish/239961815 A hot air balloon float because the air trapped inside the balloon is heated up by a burner , making it less dense than the air outside]]> 2018-03-08 23:36:51 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/239961815 https://padlet.com/wendychen18/fddt88vqxfxb/wish/239962298 The liquid in the lava lamp absorbs the heat from the light bulb , as it gains heat , it expands and become less dense ]]> 2018-03-08 23:40:33 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/239962298 https://padlet.com/wendychen18/fddt88vqxfxb/wish/239962735 Salt water is denser than water so egg will float on saltwater compared to sinking in water .]]> 2018-03-08 23:42:35 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/239962735 https://padlet.com/wendychen18/fddt88vqxfxb/wish/239980410 2018-03-09 01:22:24 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/239980410 https://padlet.com/wendychen18/fddt88vqxfxb/wish/239981933
When there is hot air, balloon will rise and it would also expand. ]]> 2018-03-09 01:29:33 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/239981933 https://padlet.com/wendychen18/fddt88vqxfxb/wish/239984326 2018-03-09 01:41:28 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/239984326 https://padlet.com/wendychen18/fddt88vqxfxb/wish/239984336 2018-03-09 01:41:30 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/239984336 https://padlet.com/wendychen18/fddt88vqxfxb/wish/239984689 the density of the egg of the egg is higher than the water thus it will sink in water but floats in salt water]]> 2018-03-09 01:42:41 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/239984689 https://padlet.com/wendychen18/fddt88vqxfxb/wish/239984912  

The ability for the lamp oil to float on the Rubbing Alcohol because the Lamp oil is less dense than the Rubbing Alcohol.This also include the other liquids as well and the have different  densities]]> 2018-03-09 01:43:36 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/239984912 https://padlet.com/wendychen18/fddt88vqxfxb/wish/239985779 the density of all the liquids in the lava lamp are similar thus they can move around easily and change where they are]]> 2018-03-09 01:47:34 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/239985779 https://padlet.com/wendychen18/fddt88vqxfxb/wish/239987427 when the hot air balloon heats up and traps air, the balloon will have  more water pressure this will help to push the balloon upwards thus the more weight it can carry]]> 2018-03-09 01:55:34 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/239987427 https://padlet.com/wendychen18/fddt88vqxfxb/wish/239987560 2018-03-09 01:56:03 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/239987560 https://padlet.com/wendychen18/fddt88vqxfxb/wish/239988423 2018-03-09 02:00:02 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/239988423 https://padlet.com/wendychen18/fddt88vqxfxb/wish/239988435 2018-03-09 02:00:05 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/239988435 https://padlet.com/wendychen18/fddt88vqxfxb/wish/239992442 The egg sinks as the density of the egg is greater than that of the tap water but when it comes to salt water, the egg density is lesser than the salt wter thus it will float on the surface of the salt water.]]> 2018-03-09 02:21:03 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/239992442 https://padlet.com/wendychen18/fddt88vqxfxb/wish/239992850 In a liquid motion lamp, the heat usually comes from a light bulb. The heavier liquid absorbs the heat, and as it heats up, it expands. As it expands it becomes less dense. Because the liquids have very similar densities, the formerly heavier liquid is suddenly lighter than the other liquid, so it rises.]]> 2018-03-09 02:23:46 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/239992850 https://padlet.com/wendychen18/fddt88vqxfxb/wish/239994217 When enough salt is added to the water, the saltwater solution's density becomes higher than the egg's, so the egg will then float .The ability of something, like the egg, to float in water or some other liquid is known as buoyancy.]]> 2018-03-09 02:32:46 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/239994217 https://padlet.com/wendychen18/fddt88vqxfxb/wish/239994709 Hot air is less dense than cool air; the heated air causes the balloon to rise simply because it is lighter than an equal volume of cold air. Buoyancy is an upward force that the air exerts, and it helps hot-air balloons and blimps stay in the air. A hot air balloon uses a burner to heat up the air inside the balloon.]]> 2018-03-09 02:35:55 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/239994709 https://padlet.com/wendychen18/fddt88vqxfxb/wish/239996386 When air in the hot air balloon is heated, the volume the hot air balloon will increase and the density of the hot air balloon will decrease. Since the density of the hot air balloon is lower than the density it will rise and float in the air ]]> 2018-03-09 02:44:49 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/239996386 https://padlet.com/wendychen18/fddt88vqxfxb/wish/239997539 Sharks have oil-filled liver to help them float in water as gravity pulled them down since oil is less dense than water.unlike fishes with gas-filled bladders,sharks rely on a large liver filled with oil which contains squalene and their cartilage which is half the normal density of bone.but still the shark is heavier than water so the sharks will non-stop swimming to keep itself floating.

]]> 2018-03-09 02:51:39 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/239997539 https://padlet.com/wendychen18/fddt88vqxfxb/wish/239998511 In a lava lamp, there are two substances of different densities mixed together. Liquids of different densities do not mix. Thus different layers of substances are formed.]]> 2018-03-09 02:58:35 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/239998511 https://padlet.com/wendychen18/fddt88vqxfxb/wish/239998887 When placed in tap water, the egg has a higher density of the water in the glass. If enough salt is added, the density of the water will become higher than the egg, causing it to float]]> 2018-03-09 03:01:20 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/239998887 https://padlet.com/wendychen18/fddt88vqxfxb/wish/240002545 the egg is more dense than the tap water but less dense than the salt water]]> 2018-03-09 03:24:01 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/240002545 https://padlet.com/wendychen18/fddt88vqxfxb/wish/240003766 When air in the balloon is heated, the volume of balloon increases and the density of balloon decreases.]]> 2018-03-09 03:33:26 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/240003766 https://padlet.com/wendychen18/fddt88vqxfxb/wish/240005401 Salt water is denser so the egg would float instead of sinking]]> 2018-03-09 03:43:42 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/240005401 https://padlet.com/wendychen18/fddt88vqxfxb/wish/240008498 When the air in the hot air balloon is heated, the volume of the hot air balloon increase and the density of the hot air balloon decreases, thus it is lower than the density of the surrounding air, causing the hot air balloon to rise and float in the sky

]]> 2018-03-09 04:08:07 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/240008498 https://padlet.com/wendychen18/fddt88vqxfxb/wish/240010430 the egg is more dense than water but less dense than salt water]]> 2018-03-09 04:24:04 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/240010430 https://padlet.com/wendychen18/fddt88vqxfxb/wish/240010722 The hot air balloon float in the air because when the burner heats up the air trapped inside the hot air balloon making the air trapped inside less dense than the air outside]]> 2018-03-09 04:26:54 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/240010722 https://padlet.com/wendychen18/fddt88vqxfxb/wish/240010948 The lava in the water has more density than the water, causing it to float in the water and not dissolve with the water]]> 2018-03-09 04:28:54 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/240010948 https://padlet.com/wendychen18/fddt88vqxfxb/wish/240011219 Wood is less dense than water, so it will float.]]> 2018-03-09 04:31:09 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/240011219 https://padlet.com/wendychen18/fddt88vqxfxb/wish/240011394  The heat usually comes from a light bulb. The heavier liquid absorbs the heat, and as it heats up, it expands. As it expands it becomes less dense. Because the liquids have very similar densities, the formerly heavier liquid is suddenly lighter than the other liquid, so it rises. ]]> 2018-03-09 04:32:42 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/240011394 https://padlet.com/wendychen18/fddt88vqxfxb/wish/240012820 hot air balloon rises because there are air trapped in the balloon which is heated by a burner]]> 2018-03-09 04:44:17 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/240012820 https://padlet.com/wendychen18/fddt88vqxfxb/wish/240013238 the salt water's density is higher than the egg's density so the egg will float . However, the water's density is lighter than the egg ,therefore the egg will sink]]> 2018-03-09 04:49:04 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/240013238 https://padlet.com/wendychen18/fddt88vqxfxb/wish/240014073  The heavier liquid absorbs the heat, and as it heats up, it expands. As it expands it becomes less dense. Because the liquids have very similar densities, the formerly heavier liquid is suddenly lighter than the other liquid, so it rises. ]]> 2018-03-09 04:59:51 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/240014073 https://padlet.com/wendychen18/fddt88vqxfxb/wish/240014093 a hot air balloon flys in the sky 'cause the burner heats up the air inside the balloon making it less than the surrounding air]]> 2018-03-09 05:00:06 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/240014093 https://padlet.com/wendychen18/fddt88vqxfxb/wish/240014201 2018-03-09 05:01:32 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/240014201 https://padlet.com/wendychen18/fddt88vqxfxb/wish/240015044 Since hot air rises it rises is pushes the hot air balloon when it is being heated

the salt water density is higher then the egg so the egg would float but in the tap water the density of the egg is lower then the water so it will sink


]]> 2018-03-09 05:12:36 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/240015044 https://padlet.com/wendychen18/fddt88vqxfxb/wish/240015231 2018-03-09 05:15:04 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/240015231 https://padlet.com/wendychen18/fddt88vqxfxb/wish/240021088 The hot air in the balloon rises due to the difference of density between both hot and cold air particles. The hot air in the balloon is less dense than the cooler air surrounding the outer side of the balloon. Objects with lesser density would rise up above, causing the hot air balloon to rise.]]> 2018-03-09 06:23:42 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/240021088 https://padlet.com/wendychen18/fddt88vqxfxb/wish/240022946 In the lamp, heat usually comes from the light bulb. The heavier liquid absorbs the heat from the light bulb and e]]> 2018-03-09 06:38:50 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/240022946 https://padlet.com/wendychen18/fddt88vqxfxb/wish/240023159 In the lamp, the heat source usually comes from a light bulb. They heavier liquid absorbs the heat from the light bulb and expands due to the heat. As it expands, the liquid becomes less dense, and because of the similar densities both liquids have, the initial heavier liquid would be lighter than the other liquid, making it rise and form blobs that make lava lamp]]> 2018-03-09 06:41:22 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/240023159 https://padlet.com/wendychen18/fddt88vqxfxb/wish/240024246 The solid in the lamp quickly turns into liquid due to heat and expands, giving it a lower density than the surrounding liquid. The “blob” is now slightly less dense than the surrounding liquid so it rises to the top of the globe. The heat source is at the bottom of the globe, and since the “blob”cools, becoming more dense than the surrounding liquid, and sinks down to the bottom of the globe where the cycle starts again.]]> 2018-03-09 06:49:09 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/240024246 https://padlet.com/wendychen18/fddt88vqxfxb/wish/240026537 Salt water is denser than water, allowing the egg to float on salt water and not in regular water.]]> 2018-03-09 07:07:31 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/240026537 https://padlet.com/wendychen18/fddt88vqxfxb/wish/240057176 The only reason why the different liquids float and sink is because all of the liquids have different densities thus some will float and some will sink]]> 2018-03-09 09:25:03 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/240057176 https://padlet.com/wendychen18/fddt88vqxfxb/wish/240078426 The air heated by the burner in the hot air balloon decreased in density and increased in volume as the temperature rise, making the hot air balloon float in the sky as the surrounding air has a higher density. ]]> 2018-03-09 10:41:06 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/240078426 https://padlet.com/wendychen18/fddt88vqxfxb/wish/240079728 The lava lamp has a light bulb located at the bottom of the lamp. As the 'lava' reaches the bottom, it gains heat and decreases in density, with volume increasing. Thus causing the 'lava' to move upwards, but to slowly drop back down as it loses heat. The process then becomes a cycle.]]> 2018-03-09 10:46:22 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/240079728 https://padlet.com/wendychen18/fddt88vqxfxb/wish/240080299 Hot Air Balloon
When air in the hot air balloon is heated up by a burner, the volume of the hot air balloon increases and the density of hot air balloon decreases.Since that the density of hot air balloon is lower than the density of the surrounding air , it will rise and float in the sky.
Lava Lamp
The lava lamp is make of two liquids which is water and wax. They never get mixed because they have much different in density. There is a light bulb at the bottom of the lamp, when the wax reaches the bottom , it was being heated. So, it will expand and become less dense and volume will increase. This will cause the wax start to move upwards.The wax will slowly move back downwards when it loses heat.This repeat again as a process and become a cycle.
Egg In Salt Water
Egg will sink in tap water because the tap water is less dense than the egg. Egg will float in salt water because salt water is dense than the egg.]]> 2018-03-09 10:48:49 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/240080299 https://padlet.com/wendychen18/fddt88vqxfxb/wish/240083285 The salt water and the tap water have different densities and volumes. The salt water has a higher density while the tap water has a lower density. Making the egg sink in tap water as it happens to have a higher density than the tap water while it is the complete opposite when in salt water.]]> 2018-03-09 11:01:11 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/240083285 https://padlet.com/wendychen18/fddt88vqxfxb/wish/240116498 2018-03-09 12:59:18 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/240116498 https://padlet.com/wendychen18/fddt88vqxfxb/wish/240144690 Salt water is more dense than the egg while water is less dense than the egg thus the egg will float in salt water and sink in normal water.]]> 2018-03-09 13:59:56 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/240144690 https://padlet.com/wendychen18/fddt88vqxfxb/wish/240149194 2018-03-09 14:07:40 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/240149194 https://padlet.com/wendychen18/fddt88vqxfxb/wish/240149228 2018-03-09 14:07:42 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/240149228 https://padlet.com/wendychen18/fddt88vqxfxb/wish/240149253 The hot air balloon can float because when the burner heats up the air trapped inside the hot air balloon, the air inside becomes less dense than the air outside.]]> 2018-03-09 14:07:44 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/240149253 https://padlet.com/wendychen18/fddt88vqxfxb/wish/240152094 The lava in the water is more dense than the water, allowing it to float above the water instead of dissolving into the water.]]> 2018-03-09 14:12:29 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/240152094 https://padlet.com/wendychen18/fddt88vqxfxb/wish/242670659 2018-03-16 04:32:23 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/242670659 https://padlet.com/wendychen18/fddt88vqxfxb/wish/242670666 2018-03-16 04:32:26 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/242670666 https://padlet.com/wendychen18/fddt88vqxfxb/wish/242670723 2018-03-16 04:33:11 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/242670723 https://padlet.com/wendychen18/fddt88vqxfxb/wish/242758219 THE HOT AIR IN THE HOT AIR BALLOON HEATED UP BY THE BURNER IS LESS DENSER THAN ITS SURROUNDING AIR, SO THE AIR IS WILL BASICALLY FLOAT AND THE SAME TIME PUSHING THE SHEET OF THE HOT AIR BALLOON ALONG WITH IT]]> 2018-03-16 11:45:16 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/242758219 https://padlet.com/wendychen18/fddt88vqxfxb/wish/242760843 THE EGG FLOATS IN SALT WATER AS THE SALT WATER IS MORE DENSE THAN THE EGG AS SALT WATER HAS MORE PARTICLES CONCENTRATED/COMPA-CT ON A REGION DUE TO THE ADDITIONAL SALT, MAKING THE EGG FLOAT.HOWEVER TAP WATER IS MORE DENSER THAN THE TAP WATER MAKING THE EGG SINK]]> 2018-03-16 11:52:10 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/242760843 https://padlet.com/wendychen18/fddt88vqxfxb/wish/242763986 THE OBJECT THAT IS FLOATING SHOULD BE LESS DENSER THAN WHAT IT IS FLOATING ON]]> 2018-03-16 12:01:03 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/242763986 https://padlet.com/wendychen18/fddt88vqxfxb/wish/243041819 When a submarine wants to submerge into the water it lets air escapes so that the submarine is heavier but when it wants to surface it will release air that is compressed in the sub and it will push the water out making it lighter as water has more density than air]]> 2018-03-17 07:12:16 UTC https://padlet.com/wendychen18/fddt88vqxfxb/wish/243041819