7.1 Spherical Earth

One clue that ancient people studied to determine that Earth is not flat is:

• Earth's shadow on the Sun

• The Moon's shadow on the Sun

• Earth's shadow on the Moon

• The Moon's shadow on the Earth

Tags

NGSS.MS-ESS1-1

A ___ is shaped like a ball, with all points on the surface at an equal distance from the center.

• ball

• sphere

• planet

• mooon

Is Earth a perfect sphere?

• Yes

• No

Which are systems of Earth?

• atmosphere

• biosphere

• cryosphere

• geosphere

• hydrosphere

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-4

NGSS.MS-ESS2-5

Which system of Earth is made up of Earth's entire body?

• geosphere

• hydrosphere

• cryosphere

• biosphere

Tags

NGSS.MS-ESS2-2

What is the force that every object exerts on all other objects because of their masses?

• friction

• mass

• weight

• gravity

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

Mass and ___ affect the strength of the gravitational force between objects.

• diameter

• volume

• distance

• weight

Tags

NGSS.MS-PS2-4

As the thermal energy melted some of Earth's material, it began to flow and form distinct ____ of different materials.

• layers

• temperatures

• densities

• chemicals

Tags

NGSS.MS-ESS2-1

NGSS.MS-PS1-4

The different materials formed layers according to their ___.

• volume

• mass

• weight

• densities

When Earth started melting, the densest materials sank and formed the ___ layers.

• outermost

• middle

• innermost