James asks “What happens to the cactus flower the day after it flowers?”

Many thanks team you are right. The cactus needs it’s flower to be pollinated.

What do I mean by pollination?

Lets look at that picture more closely (see below). Pollination is the process of transferring a pollen from the male part of a plant (the anther) to the female part of the plant (the stigma). It is better that the transfer process is from the male part of one plant to the female part of another similar plant.

What helps this happen – Bees, flies, bats and lots of other insects.

What happens then – A fruit develops from the flower site and in the fruit are seeds, lots of them. These fruits are eaten by animals and by this method the seeds are spread around the surrounding environment.

What experiments could you think of to test these thoughts (hypothesis)? Any idea then click on the ‘Leave a Reply’ button below.

“Am I living?” asked Cloe (7).

Many thanks team. You are right there was a question about clouds  and if they were living. Think about what living means for you and for other things that might be living.

Do you think that plants, rocks, clouds, germs, the air, birds, trees and you are living?  You might not think that a tomato is living BUT does it contain seeds? Think about seeds and what happens to these non-moving, non-growing things. Are they living? So put them in some water and give them some soil, what happens?

Any reader can ask a question or leave a Comment in the Leave a Reply box below

Mattheiu (Yr 4) asked “If sound can’t travel through vacuums, why are they so loud?”

 

This is an excellent question. We are told that sound travels through the air to us by the vibrations of the air molecules between speaker and listener. But how does is get to us from a very distant speaker? Or through a vacuum? The magic formula is that one form of energy can be converted to another form of energy, as my team have explained.

If we can convert one form of energy to another then why not convert sound, which is moving air and therefore kinetic energy (the energy of movement) to electrical energy that can be passed down a wire or through a vacuum as an electromagnetic wave to a listener a long way away. When it is received the reverse conversion process can take place where the electrical energy can be converted back to kinetic energy, via electromagnetics and loudspeakers and not forget ears and brain.  Then by controlling the input to the conversion process we can control the loudness. Magic but real.

See my Science Master Special on Energy

Any reader can ask another question or leave a Comment in the Leave a Reply box below