How do telescopes see on Earth and in space?
Most telescopes use mirrors to see things in space. Making a perfect mirror is easier than making a perfect lens. Lens Sometimes Must Be Large. A larger lens or mirror means a brighter picture.
What do astronomers observe with telescopes?
Astronomers use a number of telescopes sensitive to different parts of the electromagnetic spectrum to study objects in space. Even though all light is fundamentally the same thing, the way that astronomers observe light depends on the portion of the spectrum they wish to study.
How are telescopes used in space?
As the telescope orbits Earth, its mirror gathers light from the cosmos, collecting images and data. For some of Hubble’s deepest images, the telescope has stared at the same point in the sky for days, trying to capture as much of the dim glow of the far universe as possible.
Why is my salt not dissolving?
If you use too much salt (or too little water) then you will not be able to dissolve all of it. You can add salt slowly to see approximately how much can be dissolved in a given amount of water (at a given temperature). You can dissolve more salt by adding more water or heating it up.
Why does crushing a solid cause it to dissolve faster?
Energy, which is the capacity to do work or produce heat, affects the rate at which a solute will dissolve. Breaking up, crushing or grinding a sugar cube before adding it to water increases the sugar’s surface area. This means the finer the sugar particles, the faster it will dissolve.
How many seconds does it take for salt to dissolve in hot water?
Boiling water (70 degrees) – fully dissolved in the 2 minute period. Ice cold water (3 degrees) – the salt crystals shrunk to half the size but did not dissolve.
How long does it take for salt to dissolve in tap water?
Results. Boiling water (70 degrees) – fully dissolved in the 2 minute period. Ice cold water (3 degrees) – the salt crystals shrunk to half the size but did not dissolve.
How long does it take for salt to dissolve in pool?
about 24 hours
What are the factors that allow you to increase the dissolving rate of a solution?
A: The rate of dissolving is influenced by several factors, including stirring, temperature of solvent, and size of solute particles.
What are 3 factors that affect the rate of dissolving?
The rate of dissolving depends on the surface area (solute in solid state), temperature and amount of stirring.
What are the 5 factors that affect solubility?
Factors affecting solubility
- Temperature. Basically, solubility increases with temperature.
- Polarity. In most cases solutes dissolve in solvents that have a similar polarity.
- Pressure. Solid and liquid solutes.
- Molecular size.
- Stirring increases the speed of dissolving.
What are the three ways to increase the rate of dissolving?
If you are trying to dissolve a substance, you have three primary avenues to increase the dissolution rate: decreasing the particle size of the solid, increasing the temperature and/or increasing the mixing or stirring rate.
What are 3 ways to make sugar dissolve faster?
1 Answer
- Increase the surface area of the sugar.
- Increase the temperature of the water.
- Stir it up.
What increases the rate of dissolution of table salt in water?
Explanation: Crushing or grinding increases the surface area of the salt that is exposed to the molecules of water. Stirring increases the speed at which the particles of salt come in contact with the water molecules.
Which would increase the rate of dissolving salt in?
As the salt particles will be made finer, more surface area of salt will get exposed to the water molecules. Thus, a more frequent collision of water molecules with the increased surface area of the salt particles will lead to an increased rate of dissolution.
What dissolves faster sugar or salt?
No, dissolved differently. Sugar can dissolve easier than salt because when you add 8 spoons of salt into water the salt already starts to stay in the bottom of the cup. And, when you add 30 spoons into water the sugar just starts to stay in the bottom of the cup. It’s almost the same.
Which method will not speed up the rate of salt dissolving in water?
Which method below will not speed up the rate of salt dissolving in water? Increasing the surface area of the solute.