Chapter 1 Vocab Practice

Front

Scientist studying stars, planets, and universe objects

Back

astronomer

Front

Move in a regular path around something

Back

orbit

Front

Only star in our solar system

Back

Sun

Front

Time for Earth to orbit the sun

Back

Year

Front

Observations or measurements recorded in an investigation

Back

data

Front

Illustration showing how something works or its parts

Back

diagram

Front

Make a picture in your mind using info from various sources.

Back

visualize

Front

Distance across a circle or sphere through the center.

Back

Diameter

Front

The planet we live on

Back

Earth

Front

The sun, its orbiting planets, and other objects.

Back

Solar system