No, unless shaped as a boat, and no.
regular (silica) aerogel is not lighter than air but SEAgel is a form of aerogel that is lighter than air
Without having the information about what the options are there really is not any way to know which is lighter than aircraft. The rest of the information needs to be provided for the correct answer to be given.
hydrogen floats at room temperature because it has a density less than 1.
Balloons are usually filled with helium gas to make them float. Helium is lighter than air and provides the necessary lift for the balloon to float.
Sink or float... on what? - The general rule is that an object will float if it has less density than the fluid (gas or liquid) in which it is placed.
Helium is lighter than air. so balloons filled with helium will float in air
Actually, they do float. They are lighter than air, so they are supposed to float.
It's lighter than air so the balloons float.
Helium is lighter than air.
Balloons filled with it float in air
Because helium is lighter than air.
Bubbles float because they are filled with gas that is lighter than the surrounding air. This causes them to rise and float on the surface of liquids or in the air.
Everything lighter than air floats in it. Think of a floating baloon: that is not filled with air as it may look but it's filled with helium, a gas which is lighter than air. If you want to know if something will float or not just check how is its density compared to the air's one. If its lower, it will float.
depends if the plastic is heavier or lighter than water and if its hold air which is lighter than water
The balloons that float usually contain helium in them, which is lighter than air. This enables the balloon to float.
Noble gases are lighter than air. Hence balloons filled with noble gases will float in air.
Yes, helium will float in water. Helium is lighter than air, so it will also be lighter than water and rise to the surface when submerged in water.