Life long sharing . . .

Out of a number of video I watched online, I find this one the best, explaining tides (涨潮、退潮) using a biscuit, a pickled onion and an orange.

And the below video is also quite good explaining how the tides work.

Oh ya, nice for him to bring up this term “tidal wave” and clarify that it has nothing to do with the ‘tides’ we are learning.

In these two videos, we learn about escape velocity and how astronauts can travel to the moon.

In the second video, you will learn about the meteor or shooting star, explained in gravitational pull.

Let’s study about gravity from these two videos.

Defining Gravity:

So we learn: Gravity is the force of attraction between any two objects made of matter.

Down to Earth:

This is precious!

Let’s learn more about properties of matters, and get to know terms such as:

• Freezing Point
• Melting Point
• Boiling Point
• Reflectivity
• Transparency

• Hardness
• Malleability
• Conductivity
• Magnetism