The sun is composed mostly of __________ and __________?

There are two answers!

Who described the idea of gravity?

Inertia is the mysterious force that makes everything fall down towards Earth

Gravity Depends on mass and ____________.

What property do the planets have that makes them orbit the sun?

What is the property that keeps objects moving in a straight line?

True or False:

The atmosphere has all of the earth's water.

How many Spheres does Earth have?

The wearing away of land by forces.

"Bio" is the Greek word for ____________.

The Hydrosphere can be found in how many forms?

The addition of sediment to a land form.

The hydrosphere does what to the heat of the Sun?

What Sphere protects Earth from the radiation of the Sun?

"Hydro" is the Greek word for what?

"Atmos" is the Greek word for what?

What sphere holds all living things?

A full sphere.

What helps astronomers find specific stars in the sky?

How many constellations are there?

The top and thinnest layer of the earth.

Which sphere are the six biomes located in?

True or False:

The crust is made of moving plates.

True or False:

Erosion can be caused by wind, water, and ice.

True or False:

Mechanical weathering occurs when rocks are broken down by chemical reactions.

The earth's crust is divided into 2 layers:

Stretches or pulls apart the earth's crust.

Two things that break down earth's surface.

What is a large source of chemical weathering?