شرح ساينس الصف الرابع الابتدائي لغات - الفصل الدراسي الأول
شرح ساينس رابعة ابتدائي - ترم أول

لينك تحميل الملزمة
https://drive.google.com/file/d/16Fz39BbCL7aOCx80rOJUinSmmpEl1WLN/view?usp=sharing

لينك تليجرام
https://t.me/mrahmedelbashagroup

In This Part :
▌Humans have ears which are the organs of hearing to listen to music.
▌Owls have extraordinary senses of hearing and sight to be able to find their preys in the dark.
▌Dogs have very sharp senses of hearing and smell, which are used in guarding.
▌The Egyptian mongoose makes sounds to communicate with other mongooses to move from one place to another or when searching for food.
Dolphin Senses
Dolphins have super senses that help them:
• search for food. • protect themselves under water.

How can dolphins locate organisms and other things under water?
Dolphins use a property known as "echolocation" that depends on "echo" to determine the location of other living organisms and objects in the water.

Echo
is the bouncing back of sound waves when they hit a solid surface.

How dolphins use echolocation property?

What Do You Already Know About Senses at Work?

Animal perceptions:
- You know that animals have senses like those of humans.
- Each animal can use more than one sense for more than one purpose to adapt to its habitat, as shown in the following examples:


بالتوفيق
مستر احمد الباشا