The Universe
What is a star?
Stars are big gas spheres that produce heat and light.
What is the name of the dwarf planet in our solar system?
Pluto.
What is the hydrosphere?
The layer of water on the outside of the earth.
True or False: The moon is not the Earth's only satellite.
False. The moon is Earth's only satellite.
How long does the Earth take to rotate on its axis?
24 hours.
What are planets?
Planets are gas or rock spheres that orbit stars.
How long ago did the Big Bang happen?
15,000 million years ago.
What is the geosphere and what three parts is it divided into?
The solid layer of the earth that is divided into the crust, the mantle, and the core.
Draw a new moon.
Moon is between the sun and the Earth.
How long does it take the Earth to orbit around the sun?
365 days.
What are nebulas?
Nebulas are dust and gas that will form stars.
Name all of the planets in the solar system.
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto.
What is the Earth's crust?
The thin outer layer of the Earth.
Draw a full moon.
The Earth is between the sun and the moon.
What does the rotation of the Earth produce?
Day and night.
What are asteroids?
Asteroids are rocky spheres that move in the galaxy. When they hit a planet they become meterorites and when they vanish in the atmosphere they are called shooting stars.
What galaxy is our solar system part of?
The Milky Way.
What is the mantle?
The dense middle layer of the earth.
Draw a waxing moon.
This is beteween new moon and full moon. It's in a D shape.
What does the orbit of the Earth around the sun produce?
Different seasons.
What is Earth's satellite?
The moon.
What star does our solar system revolve around?
The sun.
What is the Earth's core?
The inner layer that is made of metals.
Draw a waning moon.
This is between a full moon and a new moon, it is a C shape.
What is the difference between Earth's rotation and Earth's orbit?
Earth's rotation means that Earth is spinning on its axis, and Earth's orbit means that it is going around the sun.