U3W3 "Earth" Comprehension, Wonders 3rd Grade

Front

What is the solar system?

Back

The solar system is a collection of the Sun and all the celestial bodies that are bound to it by gravity, including planets, moons, asteroids, and comets.

Front

What do we call the path that planets take around the sun?

Back

The path that planets take around the sun is called an orbit.

Front

What are the two belts that contain rocky and icy objects in space?

Back

The two belts are the asteroid belt and the Kuiper belt.

Front

How long does it take for the Earth to complete one orbit around the Sun?

Back

It takes 365 days for the Earth to go around the Sun.

Front

Who was Alan Shepard?

Back

Alan Shepard was the first American astronaut to travel into space.

Front

What is an astronaut?

Back

An astronaut is a person trained to travel and work in space.

Front

What is the main source of light and heat for the Earth?

Back

The Sun is the main source of light and heat for the Earth.

Front

What are planets?

Back

Planets are large celestial bodies that orbit a star, such as the Sun, and do not produce their own light.

Front

What is the difference between a comet and an asteroid?

Back

Comets are icy bodies that release gas or dust, while asteroids are rocky bodies that do not.

Front

What is gravity?

Back

Gravity is the force that attracts two bodies towards each other, keeping planets in orbit around the Sun.