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06:30
Are you Afraid of Heights? | Vertigo | #aumsum
28
B2 High-Intermediate
US
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06:41
Why do Elephants Never Forget? | #aumsum
15
B2 High-Intermediate
US
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06:17
Why is Ocean water Salty? | #aumsum
29
B2 High-Intermediate
US
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01:14
Why is a laboratory thermometer not used to check…
25
B1 Intermediate
US
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04:29
Redox Reactions | #aumsum
2
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01:01
Archimedes Principle - Why do ships float? | #aumsum
19
B1 Intermediate
US
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01:55
Why does sound travel faster in summer than in…
13
B1 Intermediate
US
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01:30
What causes kidney stones? | #aumsum
58
B2 High-Intermediate
US
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01:01
Lunar Eclipse - Why does the moon turn red? |…
27
B1 Intermediate
US
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03:00
How does a plastic comb attract paper? | #aumsum
20
B1 Intermediate
US
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01:01
What is a stroke? | #aumsum
25
B1 Intermediate
US
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02:26
Modes of Transportation | Videos for Kids | #aumsum
100
A2 Basic
US
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