Inside Earth
What is the centre of the Earth called?
The inner core
How much of the earth is made up of water?
97%
What is the lithosphere?
Earth's solid outer layer
The cell has 7 functions. Name at least 2 of them.
What is the centre of the Earth made out of?
80% iron and 20% nickel
The Earth's atmosphere is mainly made up of what?
Nitrogen
What is the biosphere?
The zone around Earth where life can exist
What is an organelle?
Organelles are specialized structures that perform various jobs inside cells. The term literally means “little organs.”
The Earth has 7 layers. Name at least 3 of them.
The crust, mantle, lithosphere, asthenosphere, mesosphere, outer core, and inner core.
21% of the Earth's atmosphere is made up of this gas. What is it?
Oxygen
What are tectonic plates?
Name 3 organelles in the human body.
nucleus, mitochondria, lysosomes, the endoplasmic reticulum, and the Golgi apparatus, vacuole
What is the mesosphere and why is it important?
The mesosphere is the coldest atmospheric layer surrounding the earth. It is very important for Earth's protection. It burns up most meteors and asteroids before they are able to reach the earth's surface.
What is the purpose of Earth's atmosphere?
It blocks incoming solar radiation, including most ultraviolet light, which is linked to skin cancer. Without the atmosphere, most of Earth's species would be unable to survive.
Approximately what percent of freshwater in the Earth's hydrosphere is easily accessible to humans?
0.3%
What is a red blood cell?
It is a type of blood cell that is made in the bone marrow and found in the blood. Red blood cells contain a protein called hemoglobin, which carries oxygen from the lungs to all parts of the body.
What is the asthenosphere?
The asthenosphere is a zone of Earth's mantle lying beneath the lithosphere that is much hotter and more fluid than the lithosphere. It is made out of semi-plastic rock and plays a critical role in the movement of plates across the face of Earth's surface.
What is the Earth's surface temperature?
15 degrees Celcius
What is rain?
The heat from the Sun turns moisture from plants leaves, oceans, and rivers into water vapour, which disappears into the air. Clouds are made up of tiny water droplets. When these droplets grow, they eventually become too heavy to stay suspended in the sky and fall to the ground as rain.
Centrioles are barrel-shaped organelles in the cytoplasm of animal cells. They play a role in organizing microtubules that serve as the cell's skeletal system.