Tiny crystals of ice that fall to Earth are called snow. A crystal is a solid substance that has flat surfaces and sharp corners. Snowfall is made up of both single ice crystals and clumps of ice crystals. The clumps are called snowflakes.
Snow is formed high in the clouds from water vapor, which is water in the form of gas. If a cloud is cold enough, the water vapor freezes to form ice crystals. At temperatures between about −40 °F (−40 °C) and 32 °F (0 °C), water vapor crystallizes around bits of dust in the cloud. At lower temperatures, water vapor freezes directly into ice crystals.
The ice crystals can stay up in the clouds. Or, if they are heavy enough, they can fall to the ground. As they fall they can clump together with other ice crystals to form snowflakes. One snowflake can contain as many as 100 ice crystals!
It might be chilly, but there is so much to discover outside during the winter!
We have been spending a lot of time inside during quarantine. Take a few minutes to stretch your legs and explore the outdoors this winter. Take along this Winter Nature Scavenger Hunt and see if you can find all of the items listed!
by Martin Luther King III (Author), AG Ford (Illustrator)
What was it like growing up as a son of Dr. Martin Luther King, Jr.? This picture book memoir, My Daddy, Dr. Martin Luther King, Jr. by Martin Luther King III, provides insight into one of history’s most fascinating families and into a special bond between father and son.
“I have a dream that my four little children will one day live in a nation where they will not be judged by the color of their skin but by the content of their character.”
Martin Luther King III was one of those four little children mentioned in Martin Luther King’s groundbreaking “I Have a Dream” speech. In this memoir, Martin Luther King Jr.’s son gives an intimate look at the man and the father behind the civil rights leader. Mr. King’s remembrances show both his warm, loving family and a momentous time in American history.
by Dr. Martin Luther King Jr. (Author), Kadir Nelson (Illustrator)
On August 28, 1963, on the steps of the Lincoln Memorial during the March on Washington, Martin Luther King gave one of the most powerful and memorable speeches in our nation's history. His words, paired with Caldecott Honor winner Kadir Nelson's magnificent paintings, make for a picture book certain to be treasured by children and adults alike. The themes of equality and freedom for all are not only relevant today, 50 years later, but also provide young readers with an important introduction to our nation's past. Included with the book is an audio CD of the speech.
by Doreen Rappaport (Author), Bryan Collier (Illustrator)
This picture-book biography is an excellent and accessible introduction for young readers to learn about one of the world's most influential leaders, Dr. Martin Luther King, Jr. Doreen Rappaport weaves the immortal words of Dr. King into a captivating narrative to tell the story of his life. With stunning art by acclaimed illustrator Bryan Collier, Martin's Big Words is an unforgettable portrait of a man whose dream changed America-and the world-forever.
by Brad Meltzer (Author), Christopher Eliopoulos (Illustrator)
We can all be heroes. That’s the inspiring message of this New York Times Bestselling picture book biography series from historian and author Brad Meltzer.
Even as a child, Martin Luther King, Jr. was shocked by the terrible and unfair way African-American people were treated. When he grew up, he decided to do something about it—peacefully, with powerful words. He helped gather people together for nonviolent protests and marches, and he always spoke up about loving other human beings and doing what’s right. He spoke about the dream of a kinder future, and bravely led the way toward racial equality in America.