Things in the Universe
Stars
Big Bang Theory
Measuring in Space
Lucky Dip
100

What is at the centre of a solar system?

A star

100

What is a star?

A massive ball of hot, glowing gases

100

What do we call the hot, dense point where the expansion of the Big Bang started?

Singularity

100

How long does it take for light from the Sun to reach Earth? (closest minute)

8 minutes

100

How many stars are in our solar system?

1 - The Sun

200

What is the closest star to Earth?

The Sun

200

Where are stars born?

In a nebula

200

How long ago was the Big Bang?

(nearest billion)

14 billion (13.8 billion)

200

What is a light year?

The distance that light can travel in a year

200

Objects with more mass have more gravitational force. Which object would have the most amount of gravity?

a) Earth

b) Jupiter

c) The Sun

d) The Moon

c) The Sun

300

A planet is a large celestial body which orbits a star.

What is a moon?

A body which orbits a planet

300

When a massive star dies it explodes. What is this called?

Supernova

300

The Big Bang was not an explosion. Rather it was...

A sudden and rapid expansion

300

How many light years away is Proxima Centauri? (closest star to the Sun) 

a) 1.004 light years

b) 4.246 light years

c) 28.646 light years

d) 4 trillion light years


b) 4.246 light years

300

Explain why black holes are black

A black hole has so much gravity and attracts so much that even light can not get out. Light has been absorbed = they cannot be seen

400

What do we call a group (hundreds or thousands) of galaxies, held together by gravity?

Galaxy cluster

400
How do stars generate their own energy, and what is their main fuel source?

Nuclear fusion - Hydrogen

400

Name 2 pieces of evidence that scientists have for the Big Bang Theory

Red-shift - Cosmic Background Radiation - Abundance of Light Elements

400

How fast can light travel? (km/s)

300 000 km/s

400

In what year did man walk on the moon?

1969

500

What is the name and shape of the galaxy we live in?

Milky Way - Spiral

500

Our Sun is an average sized star. At the end of its life what will it become?

White dwarf

500

Describe Hubble's Law

The universe is expanding. Galaxies further away from us are expanding at a faster rate than closer galaxies.

500

What Effect allows scientists to determine how far away a star/galaxy is?

Stellar Parallax Effect

500

Demonstrate the Doppler Effect in sound waves (with sound effects)

High pitch = Moving towards you

Low pitch = Moving away from you