Book 16 science quiz: free printable worksheet

Fill in the missing number

Number bank: 15   20   40   70   200   400   2014   3,000   11,000   15,000   20,000

1. Antarctica holds about _______ percent of Earth’s fresh water, frozen as ice.
   From: Why Is Antarctica Called a Desert Even Though It Is Covered in Ice?
2. Petrified wood can show growth rings from trees that lived _______ million years ago.
   From: How Does Wood Turn Into Stone?
3. On a scorching day, a burrow can be _______ or more degrees cooler than the surface.
   From: Why Is It So Much Cooler a Few Feet Underground in a Desert?
4. The Gobi can drop to _______ degrees below zero in winter.
   From: Which Deserts Get Freezing Winters, and Why?
5. Roadrunners can run about _______ miles per hour.
   From: Why Does a Roadrunner Sunbathe in the Morning?
6. A ring in California’s Mojave Desert called King Clone is about _______ years old, making it one of the oldest living things.
   From: How Can a Ring of Bushes Be 11,000 Years Old?
7. Scorpions have been around for more than _______ million years.
   From: How Does a Scorpion Find Its Way and Its Food in the Dark?
8. Some underground desert water is more than _______ years old.
   From: What Is Fossil Water, and Why Is It So Old?
9. In _______, scientists used GPS and time-lapse cameras and solved the puzzle.
   From: How Do Rocks Slide Across a Dry Lakebed?
10. More than _______ years ago, an enormous lake called Lake Bonneville covered much of what is now Utah.
    From: How Can Old Lake Shorelines Show Up on Desert Mountainsides?
11. Qanats have worked for about _______ years.
    From: What Is a Qanat, and How Does It Bring Water to a Village?