ELEMENTARY SCIENCE FACTS & REVIEWERS

Notes on Friction and Gravity  BY: Pj Miana Friction:   1. Definition: Friction is a force that occurs when two surfaces rub against each other.   2. Examples:    - Sliding down a slide at the playground.    - Dragging a toy car across the floor.   3. Nature of Friction:    - Friction can be helpful or challenging, depending on the situation.    - Smooth surfaces (like ice) have low friction, making objects slide easily.    - Rough surfaces (like sandpaper) have high friction, making it harder for objects to slide.   4. Role of Friction:    - Slows down or stops moving objects.    - Can be useful, like when using brakes on a bicycle.    - Influences the ease of sliding and movement.   Gravity:   1. Definition: Gravity is a force that pulls objects towards each other, especially towards the center of the Earth.   2. Exampl...

[Q2] SCIENCE LONG QUIZ & Q2 REVIEWER Direction: Write the letter and the text of the correct answer. Write them on your test notebook. 1. What is the primary function of the respiratory system?    A. Pump blood throughout the body    B. Break down food for energy    C. Exchange oxygen and carbon dioxide    D. Support and move the body 2. Which system is responsible for protecting the body from external harm, such as cuts and infections?    A. Digestive system    B. Integumentary system    C. Circulatory system    D. Musculo-skeletal system 3. What is the main role of the digestive system?    A. Control body movements    B. Filter waste from the blood    C. Break down food for nutrients    D. Transmit electrical signals in the body 4. Which two systems work together to provide oxygen to the body's cells and remove waste products? ...