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Earth Circumference, Lightning and more

Children & Family

25

Aug 25, 2013

EARTH'S CIRCUMFERENCE: Mr. Wizard does a demonstration with Giselle using a large, round wooden tabletop and they note the measurements of the shadows cast by lengths of straws on the perimeter of the circle.

Full Episodes

Season 4, 15 episodes

Solar Cookers, Ktichen Helix and more,

SOLAR COOKERS: Christian is going to use the heat of the sun to cook food for breakfast. KITCHEN HELIX: You're looking up inside a kitchen helix, a spiral-like, curved line that forms circles of increasing size around a center. What is this?

25m Aug 25, 2013

Black Bears, Mosquitos and more,

TALKING HEAD ILLUSIONS: Jackie walks into the room and is greeted by Christian whose head appears to be on a platter on a table. Mr. Wizard explains the trick by pushing a rope with one knot into a drinking glass.

25m Aug 25, 2013

Fun with Lasers, Archaeological Dig and more,

CLOCK REACTIONS: Darren dissolves some starch in a glass of water and adds iodine + 2 other ingredients. There is a change and a chemical reaction - see what happens! IMPOSSIBLE

25m Aug 25, 2013

Moon Rocks, Manatees and more,

BLACK BAG BALLOON: Ashley examines a black bottle with a black balloon on top and a white bottle with a white balloon on the top. The black balloon is inflated. Mr. Wizard explains what happens.

25m Aug 25, 2013

Air/Water Bottle Rocket, Solitaire and more,

AIR/WATER BOTTLE ROCKET: Mr. Wizard explains to Daniel how the water/air bottle rocket is released. They then pump in air, release it, and note how high it goes.

25m Aug 25, 2013

Earth Circumference, Lightning and more,

EARTH'S CIRCUMFERENCE: Mr. Wizard does a demonstration with Giselle using a large, round wooden tabletop and they note the measurements of the shadows cast by lengths of straws on the perimeter of the circle.

25m Aug 25, 2013

C02, Cave Glass and more,

CLOUD IN A BOTTLE: Mr. Wizard is going to explain how a cloud is formed and Loral has to decide whether the explanation is correct. BOILING RACE: Equal amounts of water are poured into two glass saucepans.

25m Aug 25, 2013

Northern Lights, Gas Pressue and more,

MICROSCOPIC SAFARI PART 1: Shan is going on a safari in a freshwater pond and Mr. Wizard shows her a supply of tools she is going to use to gather and inspect her catches.

25m Aug 25, 2013

Black Bears of NC, Rainbow Shelter and more,

COLORED SHADOWS: Shan knows that the primary colors in pigments are red, blue, and yellow and in light they are red, blue, and green. Mr. Wizard does a demonstration with light.

25m Aug 25, 2013

Flame Test, Running Backwards and more,

EYES VS EARS: Maria believes her eyes are more sensitive to light than her ears are sensitive to sounds because she can see many different colors.

25m Aug 25, 2013

Einstein Illusion, Magnetic Fields and more,

MICROSCOPE SOLUTIONS: Mr. Wizard uses a microscope as a tool for magnification and challenges Tyler. Mr. Wizard zooms the lens so that 2.5 mm is visible on the screen and Tyler calculates the magnification.

25m Aug 25, 2013

Floating Candle, Lake Superior and more,

WHAT'S A MILLION?? Mr. Wizard explains what a million is and shows Michael a box of 252 sugar cubes. He then uses a mathematical direction to calculate how high a stack of that many boxes it would take to make a million.

25m Aug 25, 2013

Radioactivity, Salt vs. Sugar and more,

AMMONIA FOUNTAIN: Damon assumes that the bottle Mr. Wizard is shaking is not plain water because he can see bubbles of gas in it. When they remove the cap, the liquid bubbles out onto the counter.

25m Aug 25, 2013

Dinosaur Bones, Fruit Fly Center and more,

DOPPLER EFFECT: Mr. Wizard is swinging something at the end of a long rope.

25m Aug 25, 2013

Moon Phase, Water Pressure and more,

MOON PHASES: With a tabletop planetarium Mr. Wizard and Shan revue the motions of the Earth and Moon as they revolve around the Sun.

25m Aug 25, 2013