Elements of Earth

About how many elements exist in the world today?

• ten

• fifty

• a little more than a hundred

• more than a thousand

What is the most abundant element found in Earth's atmosphere?

• helium

• nitrogen

• carbon

• oxygen

Ocean water contains all of the following elements except...

• iridium

• hydrogen

• sodium

• oxygen

The rocks forming earth's crust are made up mostly of which two elements?

• calcium & potassium

• oxygen & silicon

• aluminum & iron

• hydrogen & oxygen

Which of the following three elements are the most abundant in the plants and animals that make up the biosphere?

• sulfur, oxygen, and hydrogen

• nitrogen, silicon, and oxygen

• phosphorous, oxygen, and iron

• oxygen, carbon, and hydrogen

Which of the following element is abundant in ALL of the systems on Earth?

• iron

• hydrogen

• carbon

• oxygen

Tags

NGSS.MS-LS2-3

Which of the following spheres are comprised of hydrogen, oxygen, and sodium?

• solid earth

• living organisms

• oceans

• atmosphere

Which of the following spheres is largely comprised of carbon?

• solid earth

• living organisms

• oceans

• atmosphere

Tags

NGSS.MS-LS2-3

The atmosphere is made up of mostly which element?

• hydrogen

• oxygen

• nitrogen

• carbon

Which of the following spheres is mostly oxygen, iron, silicon, and magnesium?

• solid earth

• living organisms

• oceans

• atmosphere

Tags

NGSS.MS-ESS2-3