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Science

The observation, identification, description, experimental investigation, and theoretical explanation of phenomena is all part of science. Nothing is immune to the scientific process: from charm quarks that haven't existed naturally since the beginning of time to Pluto, recently demoted from planet to dwarf planet. Questions on knowledge about the material and physical aspects of our world are asked and answered here.

203,801 Questions

What can NH3 dissolve in?

In polar solvents it dissolves.As an example water.

How does the lectern reflect belief?

The lectern reflects belief by serving as a physical platform for sharing and expressing beliefs through speeches, sermons, or lectures. It symbolizes authority, credibility, and importance, reinforcing the speaker's message to the audience. It is often associated with religious or academic settings where beliefs are communicated and shared with others.

Who are the parents of gregorio zara?

Gregorio Zara's parents were Fabian Zara and Teodora Florentino.

Why is the aquarium considered a mini-ecosystem?

An aquarium is considered a mini-ecosystem because it contains living organisms such as fish, plants, and bacteria interacting with each other and their environment. These organisms rely on each other for survival, creating a delicate balance that mimics a natural ecosystem on a smaller scale. The aquarium also has its own nutrient cycle and waste management system, similar to a larger ecosystem.

What is a huge star that begins to use the gases in its core?

When a star exhausts its core hydrogen fuel, it begins to fuse heavier elements like helium, carbon, and oxygen. This fusion process generates more energy in the core and causes the star to expand and become a huge star. This stage is known as a red giant or supergiant.

What are the 8 planets in our solar system's names?

From the Sun, moving outwards

Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune

When is youtube going to end?

There is no specific end date for YouTube as a platform. As long as people continue to use it and the company remains successful, YouTube will likely continue to exist.

Where are mandalas made?

Mandalas have been historically made in various cultures and can be found in many parts of the world, such as Tibet, India, Japan, and the Americas. They are often created in sacred spaces like temples, or during meditation practices. Nowadays, mandalas are also created in art studios, workshops, and homes by artists and individuals looking to explore their creativity and express spiritual beliefs.

What is rocketship made out of?

A rocket ship is typically made of lightweight materials such as aluminum, titanium, and carbon composites. These materials are strong yet lightweight, which is essential for achieving lift-off and traveling efficiently through space. Additionally, the outer shell of a rocket is often covered with heat-resistant tiles or thermal blankets to protect it from the extreme temperatures experienced during reentry into Earth's atmosphere.

Animal that has a lot of teeth on body?

The ocean sunfish (Mola mola) is an animal that has a large number of small, button-like teeth on its body, which are mainly located in its throat. These teeth are not used for chewing, but rather help the sunfish to catch and consume prey like jellyfish.

What is diameter of rigel?

Its about 78 solar radii, which means that its diameter is 78 times larger than our own suns diameter of 1.392×106 .

so 78 x 1.392×106 = 1.086 x 108 km

or just over 108 million km

Does wet grass reflect images?

Yes, wet grass can reflect images due to the water droplets on its surface acting like tiny mirrors. The smoothness of the water droplets allows light to bounce off and form reflections, similar to a mirror's effect.

Where you have to be to see an upright image of yourself in concave mirror?

To see an upright image of yourself in a concave mirror you must be closer than the principal focus.

Hope this helps.

How and why will the mass of the whole space vehicle change when the boosters are separated?

When the boosters are separated from the space vehicle, the mass of the vehicle will decrease because it is losing the mass of the boosters. This reduction in mass allows the remaining vehicle to accelerate more efficiently and achieve its intended trajectory in space.

HOW TO USE sundial?

a sundial is very simple to use mailny because it uses the suns rays

however if it is night time the use of a sundial is no longer possible

on the sundial it will have numbers on it and when the sun shines on it it will cast a particular shadow that shadow should line up with a number and then it will tell you the approximate time

What is traditional beliefs about eclipse and their scientific bases?

The belief that the sun or moon is being eaten, or other wise permanently removed or changed, and that this is happening because of punishment by the gods. Furthermore, that some kind of intervention (eg prayer, sacrifice, etc) could appease the gods and cause the sun to return. Because it seemed to work (the sun came back) people kept doing it. However from Early History, in China and Greece, people had discovered the cause of ecllipses, and were even able to forecast them.

Which planets are terrestrial and which are gaseous planets?

Mercury, Venus, Earth, and Mars are terrestrial planets, characterized by their solid, rocky surface. Jupiter, Saturn, Uranus, and Neptune are gaseous planets, composed mostly of gas and lacking a solid surface.

Do coloured objects form coloured shadows?

Shadows are simply an area that does not get as much light as the areas around it. That being said, if the object is totally opaque (or you can't see through it), then the shadow will simply be darker (usually a shade of black) because of the lack of light. If the object is transparent, on the other hand, then what light does go through will tint the light that does find it's way through the object.

Why does the temperature in the thermosphere steadily rise?

The temperature in the thermosphere rises because of the absorption of high-energy solar radiation by gases like oxygen and nitrogen in this layer of the atmosphere. The density of these gases is extremely low, so there are few particles to absorb the heat from the radiation, causing the temperature to increase significantly.

What is a three-dimensional image that seems to float in space?

A hologram is a three-dimensional image that appears to float in space. It is created using light diffraction to make it look solid from all angles. Holograms are commonly used for security features on credit cards and as entertainment in holographic displays.

What are the three parts of the interior if the sun?

The three main parts of the sun's interior are the core, where nuclear fusion occurs, the radiative zone, where energy is transported by photons, and the convective zone, where heat is transported through the motion of plasma.

How does a compass work when your hiking?

The arrow that points north in the compass is attracted to the magnetic north pole, using magnetic waves generated by the earth. Even though the magnetic north pole is several miles from the rotational north pole, it helps you go north.

answ2. Only the second statement above is true. The earth's magnetic field is generated by electrical currents flowing roughly parallel to the Equator. These are generated, we believe, by the hot magma.

Your compass needle does NOT point north. Rather, it aligns itself with the magnetic lines of force at your location. But the local magnetic north may well be quite different from the real north. This is called the magnetic deviation in your region.

Which two of the water cycle are both processes by which liquid water changes into water vapor?

The two processes by which liquid water changes into water vapor in the water cycle are evaporation, which occurs when water is heated by the sun and turns into vapor, and transpiration, which is the release of water vapor from plants during photosynthesis.

What keeps a rocket from falling back to the surface or moving off into space?

A rocket is propelled by its engines to overcome Earth's gravity and achieve enough speed to enter orbit or reach its destination. In space, there is no air resistance or opposing forces to slow it down, allowing it to continue moving forward. To prevent a rocket from falling back to Earth, it must reach a minimum speed known as escape velocity.