Distances in Space

How do we MEASURE distances in space?

Astronomical Unit vs Light Year

Multiple Choice

A huge collection of stars , gas and dust

• Universal

• Universe

• Galaxy

• Solar system

• Inner and Outer planets

Multiple Choice

Which of the following list the correct hierarchy in the Universe from biggest to smallest?

¿Cuál de las siguientes enumera la jerarquía correcta en el Universo de mayor a menor?

• Universe, galaxies, solar system, stars and planets

• Planets, stars, solar system, galaxies, universe

• Solar system, galaxies, stars, planets, universe

• Universe, solar system, galaxies, planets and stars

Multiple Choice

Which component from the table above is MOST likely a solar system? (click the picture to enlarge)

¿Qué componente de la tabla anterior es MÁS probable que sea un sistema solar? (Haga clic en la foto para ampliarla)

• Component 4

• Component 2

• Component 1

• Component 3

Multiple Choice

An astronomical unit is...

• The average distance between the Earth and the Sun

• The average distance between the Sun and Neptune

• The diameter of the sun

• The time it takes light to travel across our solar system

Multiple Choice

Astronomical units are used for....

• Distances within a solar system

• Distances between solar systems

• Distances within galaxies

• Distances between galaxies

Multiple Choice

The distance that light can travel in a year is called....

• A light second

• A light minute

• A light month

• A light year

Multiple Choice

_________would be the best unit to use to measure the distance between our sun and Proxima Centauri (our nearest star neighbor).

• Astronomical units

• Light seconds

• Light years

Multiple Choice

Why do we use light years and astronomical units to measure distances in space?

• Scientists want to sound smart.

• Hubble discovered these units and wanted to use them.

• Space is too small to use km, it wouldn't make sense.

• Space is too big, vast, enormous to use traditional units, like miles.