Words, images and videos are second person experiences and therefore not as effective as a direct, personal experience. An image is better than a thousand words and an experiment is better than a thousand videos.
Transmitting experiences to others is like "filling the bucket". It is far better to light a fire in the learner, make the learner experience and learn for himself or herself.
As Marshall McLuhan famously said - the medium is the message. The medium of learning has a dramatic effect on its efficacy.
Long back before writing, all teaching occurred through a teacher instructing pupils verbally. This evolved to using books and written material in a lecture format in medieval times. Even today, this remains the predominant method of instruction.
Tablets bring alive formely esoteric topics and learners can interact with and experience scientific phenomenon quickly and safely in a virtual reality provided by these devices.
Effective Learning is a cycle of multiple stages going through observation, reflection, abstraction and experimentation. Direct instruction rarely leads to conceptual understanding and learning.
Science which attempts to explain physical phenomenon needs to go hand in hand with experiments, observation and abstraction. Teaching science without experiential mechanisms is like teaching a blind person about a rainbow. Learning material has to be carefully structured into modules which trigger the learning cycle and encourage rapid assimilation.
Without doubt, without genuine enquiry, no learning can take place. All science is built upon facts just as a house is buit of bricks. But, paraphrasing Poincare, a collection of facts is no more a science than a pile of bricks is a house.
Doubts trigger alternative ideas, different explanations which culminate in understanding or the realization that our current understanding is flawed.