6th Grade Science Earth, Moon, and Sun 3

The Moon does not make its own light; the ____ illuminates the Moon.

• Earth

• Sun

• Stars

• Universe

Scientists can use simulations to gather ______ and answer _______.

• support

• investors

• evidence

• questions

_______ are representations of systems that help us understand something by making it simpler or easier to see.

• Models

• Theories

• Laws

• Experiments

When a model is “_______,” object sizes and distances are larger or smaller than in the real world but the same relative to one another.

• reduced

• to scale

• not to scale

• enlarged

Earth, the Moon, and the sun are extremely far away from each other. Even though all three are huge, the distances between them are even ______.

• closer

• smaller

• larger

• the same

The sun illuminates the half of the Moon that is _____ it, and the other half is dark.

• closes to it

• nearest

• away from

• facing

Light from the sun travels in _____ lines.

• straight

• curved

• broken

• sharp

Scientists can use models to represent their understanding of a ______.

• message

• proposal

• concept

• need

The ________ of the Moon changes when observed from Earth, even though half of the Moon is always illuminated by the sun.

• appearance

• size

• distance

• shape

Reading _____ means thinking about one’s own understanding as one reads.

• correctly

• actively

• thoughtfully

• slowly