Vocabulary#11

solar system: the sun and the objects that are traveling around it.

Planet: any of the eight large bodies that travel around the Sun and shine by reflecting its light.

Gravity: a force of attraction, or pull, between any objects around it.

Inertia: the tendecy of a moving object to keep moving in a straight line.

lithosphere: Land's Earth.

crust: the rocky surface that makes up the lithosphere.

resources: any material that helps support life on Earth.

hydrosphere: Earth's water