📚 مادة الاختبار: Science — Primary 4
تدريب عام: Unit 3 : Concept 3.1 Devices and Energy (Science) - Primary 4
سؤال من
السؤال 1
Which statement best describes wasted energy in a device?
السؤال 2
What is the primary function of an energy chain diagram?
السؤال 3
What are the forms of energy output from a table lamp?
السؤال 4
In an energy chain involving a power plant burning coal, what type of energy is often associated with the process of electricity generation before it becomes electrical energy for transmission?
السؤال 5
What type of energy conversion occurs in a human body when riding a bike after eating food?
السؤال 6
Chemical energy in food is converted into kinetic energy when a person pushes bicycle pedals.
السؤال 7
What kind of operations do Mars rovers typically perform?
السؤال 8
The study of energy conversions and conservation principles is a core concept in physics.
السؤال 9
How does the energy stored in coal primarily originate?
السؤال 10
What process allows plants to convert light energy into stored chemical energy in the form of sugars?
السؤال 11
What is a major challenge for the Mars rover's energy system compared to a remote-controlled toy car?
السؤال 12
What happens to some energy at each link in an energy chain?
السؤال 13
What is the role of reasoning in a scientific explanation?
السؤال 14
How was coal, a common fossil fuel, formed according to energy chain descriptions?
السؤال 15