結果 : helium is a gas that is less dense than air

-
1:50

The Density of Gases

Berean Builders
31,617 回視聴 - 7 年前
2:24

This Boat Floats On Air! | Xploration DIY SCI

Da Vinci
73,677 回視聴 - 5 年前

-
4:52

Lighter and heavier than air gases

Imagination Station Toledo
28,801 回視聴 - 12 年前
3:27

Science & Environmental Facts : Why Does a Helium Balloon Rise?

ehowgreen
15,265 回視聴 - 15 年前
3:13

Hydrogen and Helium

Benjamin Merritt
51,643 回視聴 - 4 年前
1:24

Hydrogen and Helium-The Density of Gases

Because We Can- The Channel
1,403 回視聴 - 11 年前
6:12

Why Do Compressed Air Cans Get Cold?

minutephysics
1,267,100 回視聴 - 5 年前
2:15

Gas Density

MooMooMath and Science
3,949 回視聴 - 11 か月前
0:49

CRAZY DEEP VOICE GAS EXPERIMENT!

Smosh Pit
931,008 回視聴 - 2 年前
6:55

Ideal vs. Real Gases: Cooling Balloons filled with Helium and Air in Liquid Nitrogen

Tommy Technetium
40,475 回視聴 - 9 年前
1:09

what makes a balloon go up in the air ? - where balloon stops? Balloon facts for kids

Learn with Sarim
248 回視聴 - 9 日前
0:22

Fun with helium and sulfur hexafluoride gas

VOIP4ME
3,819 回視聴 - 12 年前
0:44

Helium, buoyancy, and liquid nitrogen...

Ms. Maya's science side quests
667 回視聴 - 7 年前
0:59

Physics - Density - Liquid nitrogen shrinking a helium filled balloon

@Petersplim Singapore
73,192 回視聴 - 17 年前
3:40

This "deep voice gas" will make it sound like you're possessed

9NEWS
281,758 回視聴 - 5 年前
0:57

Why does hot air balloon float? | #aumsum #kids #science #education #children

It's AumSum Time
122,402 回視聴 - 6 年前
1:59

Helium

Smart Science
112 回視聴 - 1 年前