AQA GCSE Physics 4.8 Space physics overview quiz quiz

The Earth

A black hole

A nebula

The Sun

Gravity

Friction

The motor effect

Air resistance

Its speed is secretly increasing all the way around the orbit

Gravity changes its direction, so its velocity changes

It is steadily slowing down as it travels around the orbit

There is actually no acceleration at all when an object is in orbit

From the huge explosion of a dying star known as a supernova

From a black hole that gradually builds itself back up into a star

From a cloud of dust and gas pulled together by gravity

From two large planets colliding together at high speed

There are no forces of any kind acting on the star at all during this stage

It has completely stopped doing any nuclear fusion in its core

It is held together entirely by a powerful magnetic field

Gravity pulling inwards is balanced by the outward pressure from fusion

A white dwarf

A black hole

A neutron star

A supernova

A white dwarf

A black hole

A red giant

A protostar

Distant galaxies physically turning a deeper red colour as the years pass by

A decrease in the wavelength of light from distant galaxies

An increase in the observed wavelength of light from distant galaxies

The light from distant stars being completely absorbed by dust

That galaxies are getting hotter

That the universe is contracting

That galaxies are standing still

That the universe is expanding

The cosmic microwave background radiation

The changing phases of the Moon seen each month

The daily rise and fall of the tides on Earth

The overall brightness of the Sun in our sky

It has always existed at exactly the same fixed size throughout all of time

It began from a small, hot, dense point and has been expanding ever since

It is steadily shrinking inwards towards a single tiny point in space

It was created in the explosion of one enormous supernova long ago

To explain why different stars appear in many different colours

To explain the way the Moon orbits around the Earth each month

To explain observations the current theory cannot fully account for

Because both of them have already been directly seen and clearly measured