Unit 9 Lesson 3: Modelling in Space Science

Scientists create models to...

• determine the structure of a particular thing

• know the color of things

• measure structures

• show the solar system

Scientists make models in scale because...

• the calculations are the same

• they are cheaper to make

• they compare familiar objects and distances to astronomical objects and distances

• they cannot change their size

______ is a mathematical relationship between the measurements or distances in a model and the actual measurements or distances of an object or system.

These are some types of models:

Select all the answers that apply.

• computer model

• mathematical model

• physical model

• role model

What is this kind of model?

• computer model

• physical model

• role model

• mathematical model

A ________ is a large collection of stars, gas, and dust that is held together by gravity.

The name of our galaxy is...

• Andromeda

• Centaurus

• Milky Way

• Cartwheel

The _______ includes space and all of the energy and matter within it

_________ was the first person to observe the Milky Way in the early 1600s.

• Galileo Galilei

• Isaac Newton

• Edwin Hubble

• Neil Armstrong

Select the four different types of galaxies.

• Elliptical

• Irregular

• Barred Spiral

• Squared

• Spiral