Skip to main content

Blood Moon - And P4 Science

By
Did you catch the blood moon/ blue moon/lunar eclipse on 31 Jan 2018? 


Picture from: Science centre
Were you are the science science?

I did. Accidentally. Didn't had time to watch the TV or see my social media, so I didn't know about the natural occurrence today! 

I was running with my colleague (more than colleague more than friends actually) around Novena area and we looked up at the moon and exclaimed: 

"The moon is red today! " 
Didn't bring my phone. My friend's photo. :) 








Sequence of events
At 10pm, when I was watching TV, it was all over the news. I also saw lots of FB post on it.  On the way home, I saw a crescent (moon partially blocked). I reached home about 11pm and it was a bright round 'normal' moon again! 


How did it happen? 
photo taken from: http://www.skyandtelescope.com/observing/january-lunar-eclipse/

P4 Science Question (Concept on light): 

Q: How do we see the red blood moon? 
Red light was reflected from the moon into our eyes. 



More READINGS: 
The difference between solar and lunar eclipse: 
(Photo from pinterest)
Happens for a shorter time.
Can be seen only at smaller part of the world.

More readings on solar eclipse:
https://spaceplace.nasa.gov/eclipse-snap/en/
http://www.businessinsider.sg/solar-eclipse-diagram-2017-8/?r=US&IR=T

Happens for a longer time.
Can be seen by a bigger part of the world.



P4 Science Question (Concept on light): 

Q: Why is the moon 'black'?
Light from the sun cannot be reflected by the moon (as the Earth blocks the light from the sun) into our eyes, so the moon appeared 'black'.

Q: How are shadows (= lunar eclipse) formed? 

Light from the sun was being blocked by the Earth, forming a shadow.


MORE ON SECTION B? CLICK HERE
MORE ON SECTION A? CLICK HERE

Comments

Post a Comment

Popular posts from this blog

Answers to PSLE Questions

By
Why do I write suggested solutions to Red Swastika 2018 SA1 Paper? - My students found it useful and requested for more!  - The parents who used it to help their child have found it useful!  That's why despite using 4 hours just to write ONE SET of the suggested solutions (Section B only) and doing the miscellaneous admin such as scanning, downloading documents, writing email to send out to our ISUN warriors, I do it.  Hope that all these will contribute to their learning :)  From the paper, there are quite a couple of questions from the PSLE Booklet: You can download the Red Swastika 2018 Paper here!  Red Swastika 2018 Q 30 Reproduction of Plants PSLE 2018 Q15 TEST IT OUT!  PSLE 2018 Q15 ANSWER  Red Swastika 2018 Q33 Adaptations PSLE 2013/ Specimen Paper Adaptions TEST IT OUT!  PSLE 2013/ Specimen Paper Adaptions ANSWERS Refer to other posts to learn more! Water cycle: htt...
20 comments
Read more

Respiration and Photosynthesis

By
Respiration and Photosynthesis With air quality going downhill, there may be chances that we need to carry plants around as our oxygen tank.  The working mechanism is based on 2 simple concepts of Primary 5 Science, Respiration and Photosynthesis.  As seen from the picture, the man is wearing a mask connected to the plant. As the man respires, it gives out carbon dioxide.  The carbon dioxide, together with water and light, the green plant with cholorphyll photosynthesises and produces oxygen for the man to respire and survive.   A summary of the both respiration and photosynthesis processes are below: Respiration Respiration is the breaking down of digested food with oxygen to produce energy. The equation of Respiration Sugar (from digested food) +  Oxygen (from inhaled air)   รจ  ENERGY (for body to use) +  Carbon Dioxide (to exhaled air) + Water Vapour (to exhaled air)  *NOTE* All living things respire includ...
9 comments
Read more

Amazing Animals' Adaptations 3: Raptor of the Sky

By
From the oceans, let's rocket to the sky to understand about the powerful eagle, king predator of the sky. As the video does not mentioned anything much, below is a summary of the adaptations of the eagle. Eagle's Adaptations Eagles and other birds are commonly tested in Primary Science Examinations, especially with regards to their body shape, feet and beaks Primary 6 Science Application Questions: Adaptation QUESTION 1 Two birds, Bird A and Bird B, were kept separately in two cages as shown below. 300g of seeds and 50 ml of nectar were placed in each cage at the start of the experiment. After two days, the amount of seeds and nectar were recorded in the table shown below. Mass of seeds at the start of the experiment (g) Mass of seeds at the end of the experiment (g) Cage with Bird A 300 300 Cage with Bird B 300 100            Volume of nectar at the start of the experiment(ml) Volume of the nectar at ...
1 comment
Read more