4th grade Trivia Flashcard

Front

What is a marsupial?

Back

A marsupial is a type of mammal that carries and nurses its young in a pouch. Examples include kangaroos and koalas.

Front

Name an example of a marsupial.

Back

Kangaroo.

Front

What are the main layers of the Earth?

Back

The main layers of the Earth are the crust, mantle, outer core, and inner core.

Front

What is the layer of the Earth directly below the crust?

Back

The mantle.

Front

How many hearts does an octopus have?

Back

An octopus has three hearts.

Front

What is the function of the hearts in an octopus?

Back

Two hearts pump blood to the gills, where it is oxygenated, and the third heart pumps the oxygenated blood to the rest of the body.

Front

Which animal is known to have the longest lifespan?

Back

The Greenland Shark is known to have the longest lifespan of any vertebrate.

Front

What is the average lifespan of a Greenland Shark?

Back

The average lifespan of a Greenland Shark is estimated to be around 400 years.

Front

What is the largest ocean on Earth?

Back

The Pacific Ocean.

Front

What are some characteristics of the Pacific Ocean?

Back

The Pacific Ocean is the largest and deepest ocean, covering more than 63 million square miles and containing the Mariana Trench.