Solar radiation warms both land surfaces and water on our planet. Land surfaces absorb much more solar radiation than water. Since land absorbs more solar radiation the land surface retains more heat as do the vegetation for energy. Thus, land surfaces warm more quickly than water.

Sand heated up faster than water because sand has a color and water is clear. Sand heated up faster than water because sand is darker than water; dark colored materials will absorb more light.

Explain that sand and sandy soils absorb heat more quickly but also lose it more quickly. Conversely, darker soils absorb but also release heat more slowly.

This simply means that water moves quickly through the soil and air replaces it quickly. Before we go into too much detail, a sandy soil will replace water with air more quickly, and this is why sandy soils dry out faster than clay soils.

When sand is added to water it either hangs in the water or forms a layer at the bottom of the container. Sand therefore does not dissolve in water and is insoluble. It is easy to separate sand and water by filtering the mixture. Salt can be separated from a solution through evaporation.

Answer: When we fill the glass with water, we notice right away that it can go over the brim of the glass without spilling. This is because of surface tension. This attraction causes the molecules to stick together and avoid spilling down the side of the glass like gravity would like them to.

Answer: yes , because This is because of surface tension. Surface tension holds the water together and acts against what would normally cause the water to fall – gravity – because each molecule of water is attracted to the other water molecules around it.

If you have a glass of water and pour it into another glass, it clearly conforms – it takes on the shape of the glass. If you spill the water, it will go everywhere. Because it isn’t in a container, it is conforming to the shape of the floor, making a big puddle!

Answer: When any liquids are spilt on the floor they takes any irregular shape ,since they do not have any fixed shape and size ,and they will move toward the lower floor (dhalan) .

Answer: -the food coloring drops on the water, as it drops, it spreads throughout the bottle smoothly. – when it spreads, it’s starting to loss its color. – when dropped on the water, it spreads in any direction.

Add a single drop of food coloring to the water and watch as the color of the water slowly changes (see Figure 1). Keep vibrations that may agitate the liquid to a minimum. It may take up to 20 minutes for the food-dye molecules to disperse evenly throughout the water.

In hot water, the food coloring diffuses (spreads out) through the water quickly. In cold water, the food coloring diffuses (spreads out) through the water slowly. The hot water causes the food coloring to diffuse faster. At higher temperatures, particles move faster.

Does food coloring dissolve in water? Yes. The solute (food coloring) is dissolved in the solvent (water) when the molecules of the solute are so thoroughly intermixed within the molecules of the solvent that they do not settle out or separate.

Molecules in a liquid have enough energy to move around and pass each other. The food coloring you add to the water is pushed around by the water molecules. Since the molecules in warm water move around faster, the food coloring spreads out quicker in the warm water than in the cold water.

When placed into water, food coloring will begin to mix with the water. The food coloring will mix the fastest in the hot water because the molecules are moving fast due to their increased thermal energy.

What’s happening in there? Heat is a form of energy. The heat energy from the water makes the water molecules in the hot water move faster than the water molecules in the cold water.

Since cold water is more dense, it sinks in the room temperature water. When water is heated, the water molecules move faster and spread out more. This makes hot water less dense than room temperature water.

Glass may break at low temperatures, but this is because the contents freeze and their expansion cause the glass to crack (if the cap does not come off). Hot temperatures can cause the glass to break when the bottle is subject to excessive thermal variations.

2 Answers. There is ill effect if the water contains germs. Boiling water kill the germs, and mixing them with cold water will result in a temperature low enough for the germs from the cold water to survive. Thus, its better you to take hot water and keep it for sometime and then drink it.

But a question arises for many when it comes to moving from hot to cold in such a manner: is it safe? When practiced properly, immersion between hot and cold water (commonly referred to as contrast bath therapy) is perfectly safe.

The Journal of Clinical Endocrinology and Metabolism says that drinking cold water can actually help you to lose weight. In fact, water has zero calories, so it is impossible that drinking water — cold or room temperature — causes weight gain.