How is a stable star formed Igcse physics?

A star forms when it is hot enough for nuclear reactions to start. This releases energy, and keeps the star hot. During the main sequence period of its life cycle, a star is stable because the forces in it are balanced. The outward pressure from the expanding hot gases is balanced by the force of the star’s gravity.

How do you revise for Igcse physics?

1. Take your studies into the real world.
2. Have a chat with your IGCSE physics teacher after your class.
3. Maintain a revision and formula sheet.
4. Teach a friend.
5. Don’t cut corners.

What is absolute magnitude of a star GCSE?

The absolute magnitude (M) of a star is the apparent magnitude it would have if placed at a distance of 10 pc from an observer. It is a measure of a star’s inherent brightness. This means that absolute and apparent magnitudes are measured on the same logarithmic scale.

What is the universe Igcse?

Planets, Stars & Galaxies The Universe is is a large collection of billions of galaxies. It is also the name given to the entirety of space.

What are the 7 parts of star formation?

• STAGE 1: AN INTERSTELLAR CLOUD.
• STAGE 2: A COLLAPSING CLOUD FRAGMENT.
• STAGE 3: FRAGMENTATION CEASES.
• STAGE 4: A PROTOSTAR.
• STAGE 5: PROTOSTELLAR EVOLUTION.
• STAGE 6: A NEWBORN STAR.
• STAGE 7: THE MAIN SEQUENCE AT LAST.

What are the 3 possible outcomes in the life of a star?

When the helium fuel runs out, the core will expand and cool. The upper layers will expand and eject material that will collect around the dying star to form a planetary nebula. Finally, the core will cool into a white dwarf and then eventually into a black dwarf. This entire process will take a few billion years.

Is physics hard in Igcse?

On top of being regarded one of the hardest IGCSE subjects, Physics is also well-known for it’s Maths content. There are various equations and concepts that you will be required to master and apply to questions.

Is Igcse physics difficult?

Yes. AS is generally more difficult than IGCSE. At the higher level you are not examined mainly in knowledge and recall, but you have to show understanding of the material by applying concepts to solve problems.

Is Igcse Chemistry hard?

IGCSE is a tough nut to crack. One cannot take any chance when preparing for such important examination. The preparation has to be very strong and reliable.

Are the stars equally bright?

Some stars are naturally more luminous than others, so the brightness level from one star to the next can be significantly different. A star’s actual brightness refers to how much power a star has – which can also be explained as the amount of wattage it has (think of light bulbs!).

What is radiant flux and luminosity?

The luminosity is the total radiation that leaves the star. The radiant flux intensity is the amount of radiation measured on Earth. By the time the radiation reaches the Earth, it will have spread out a great deal, therefore, it will only be a fraction of the value of the luminosity.

What is a star’s absolute magnitude?

The absolute magnitude of a star is defined as the magnitude it would have if it were viewed at a standard distance of 10 parsecs (32.6 light-years).

What is red-shift GCSE?

Red-shift and speed It is a result of the space between the Earth and the galaxies expanding. This expansion stretches out the light waves during their journey to us, shifting them towards the red end of the spectrum. The more red-shifted the light from a galaxy is, the faster the galaxy is moving away from Earth.

Which exam boards do astronomy GCSE?

Pearson Edexcel GCSE Astronomy (2017)

Is space a physics?

Unsourced material may be challenged and removed. Space is one of the few fundamental quantities in physics, meaning that it cannot be defined via other quantities because nothing more fundamental is known at the present. On the other hand, it can be related to other fundamental quantities.

What are the 4 life stages of a star?

• Giant Gas Cloud.
• Protostar.
• T-Tauri Phase.
• Main Sequence.
• Red Giant.
• The Fusion of Heavier Elements.
• Supernovae and Planetary Nebulae.

What is the death of a star called?

When a high-mass star has no hydrogen left to burn, it expands and becomes a red supergiant. While most stars quietly fade away, the supergiants destroy themselves in a huge explosion, called a supernova. The death of massive stars can trigger the birth of other stars.

Why do stars have colors?

The color of a star is linked to its surface temperature. The hotter the star, the shorter the wavelength of light it will emit. The hottest ones are blue or blue-white, which are shorter wavelengths of light. Cooler ones are red or red-brown, which are longer wavelengths.

What happens to star when it dies?

When a star like the Sun has burned all of its hydrogen fuel, it expands to become a red giant. This may be millions of kilometres across – big enough to swallow the planets Mercury and Venus. After puffing off its outer layers, the star collapses to form a very dense white dwarf.

What happens if a star runs out of hydrogen?

Eventually the core of the star runs out of hydrogen. When that happens, the star can no longer hold up against gravity. Its inner layers start to collapse, which squishes the core, increasing the pressure and temperature in the core of the star.

What are the 10 stages of a star?

• A nebula. A star forms from massive clouds of dust and gas in space, also known as a nebula.
• Protostar. As the mass falls together it gets hot.
• Main sequence star.
• Red giant star.
• White dwarf.
• Supernova.
• Neutron star or black hole.

What are the easiest IGCSE subjects?

• Religious Studies.
• Media Studies.
• Hospitality and Catering.
• Business Studies.
• Drama.
• Physical Education.
• Design and Technology.
• Sociology.

Can I self study IGCSE?

Login to Academic Camp from the comfort of your own home and study up to five Cambridge IGCSEs in just one year instead of two years or just choose one or two subjects, such as English and Maths, alongside your normal school work.

Why is IGCSE so hard?

IGCSE program’s extensive and broad learning makes it extremely difficult for students to study and prepare for exams because the amount of knowledge that needs to be viewed is too heavy. This causes many students to become discouraged, neglect their studies, and lower their own score goals.

Which is the hardest subject in O levels?

In order of easiest to most difficult, our list of the top 15 hardest A-Levels are: Art, Design & Technology (Product Design), Business Studies, Politics, Economics, History, English Literature, Psychology, Modern Languages, Mathematics, Computer Science, Biology, Chemistry, Further Mathematics, and Physics.