1 00:00:04,370 --> 00:00:02,330 have you ever wondered how even though 2 00:00:06,410 --> 00:00:04,380 the sun is so much bigger than the moon 3 00:00:08,750 --> 00:00:06,420 they appear to be the same size in the 4 00:00:11,390 --> 00:00:08,760 sky or how the moon can cover up the Sun 5 00:00:13,730 --> 00:00:11,400 and cause a total solar eclipse 6 00:00:15,770 --> 00:00:13,740 let's try something out take any two 7 00:00:17,750 --> 00:00:15,780 differently sized circles 8 00:00:20,029 --> 00:00:17,760 I'm using a paper plate 9 00:00:21,830 --> 00:00:20,039 and a coin I found 10 00:00:23,929 --> 00:00:21,840 secure the larger Circle either by 11 00:00:32,030 --> 00:00:23,939 having a friend hold on to it for you or 12 00:00:35,930 --> 00:00:33,709 now what you're going to want to do is 13 00:00:38,870 --> 00:00:35,940 take the smaller Circle and hold it out 14 00:00:42,290 --> 00:00:38,880 at arm's length and close one eye 15 00:00:44,450 --> 00:00:42,300 see if it overlaps the larger Circle 16 00:00:46,549 --> 00:00:44,460 if it doesn't take a few more steps back 17 00:00:48,830 --> 00:00:46,559 and try again until the smaller Circle 18 00:00:51,830 --> 00:00:48,840 completely overlaps the larger Circle 19 00:00:54,229 --> 00:00:51,840 what we found here is the spot where the 20 00:00:56,510 --> 00:00:54,239 smaller object appears to look at the 21 00:00:58,549 --> 00:00:56,520 same size as the bigger object despite 22 00:01:00,650 --> 00:00:58,559 being completely different sizes 23 00:01:03,229 --> 00:01:00,660 even though the Moon is about 400 times 24 00:01:04,969 --> 00:01:03,239 smaller than the sun it's also about 400 25 00:01:06,890 --> 00:01:04,979 times closer to us 26 00:01:09,050 --> 00:01:06,900 so when both the sun and the moon appear 27 00:01:10,910 --> 00:01:09,060 in the sky the moon can completely cover 28 00:01:13,070 --> 00:01:10,920 up the Sun and cause a total solar 29 00:01:14,510 --> 00:01:13,080 eclipse try this at home and see if you 30 00:01:16,190 --> 00:01:14,520 can find the point where objects appear 31 00:01:17,390 --> 00:01:16,200 to be the same size despite being 32 00:01:19,730 --> 00:01:17,400 completely different 33 00:01:20,870 --> 00:01:19,740 eclipses are all about perspective and 34 00:01:23,030 --> 00:01:20,880 distances 35 00:01:25,010 --> 00:01:23,040 the distance and angle of the Moon can 36 00:01:27,109 --> 00:01:25,020 vary throughout the year so sometimes 37 00:01:28,850 --> 00:01:27,119 instead of a total solar eclipse we can 38 00:01:31,070 --> 00:01:28,860 get a partial solar eclipse when the 39 00:01:33,050 --> 00:01:31,080 moon only covers part of the Sun or an 40 00:01:34,670 --> 00:01:33,060 annular solar eclipse when the sun peeks 41 00:01:36,469 --> 00:01:34,680 out around the moon so it looks like a 42 00:01:38,330 --> 00:01:36,479 big Ring of Fire