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Test: Energy -1 - Class 6 MCQ


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10 Questions MCQ Test IGCSE Cambridge Science for Year 6 - Test: Energy -1

Test: Energy -1 for Class 6 2024 is part of IGCSE Cambridge Science for Year 6 preparation. The Test: Energy -1 questions and answers have been prepared according to the Class 6 exam syllabus.The Test: Energy -1 MCQs are made for Class 6 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Energy -1 below.
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Test: Energy -1 - Question 1

How do vehicles like cars and buses primarily derive energy for their operation?

Detailed Solution for Test: Energy -1 - Question 1
Vehicles like cars and buses primarily derive energy from fuels burned in their engines through a process known as combustion. Combustion of fuels such as gasoline or diesel releases energy, which in turn powers the vehicle's engine, enabling it to move. This process involves the conversion of chemical energy stored in the fuel into mechanical energy for propulsion.
Test: Energy -1 - Question 2

Which essential element is required for both food consumption by living organisms and fuel combustion in engines to release energy?

Detailed Solution for Test: Energy -1 - Question 2
Both food consumption by living organisms and fuel combustion in engines require the presence of oxygen to release energy. In living organisms, oxygen is essential for the process of cellular respiration, where energy is extracted from food molecules. Similarly, in engines, oxygen is necessary for the combustion of fuels, enabling the release of energy that powers the engine and drives mechanical processes.
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Test: Energy -1 - Question 3

What is the primary function of batteries in storing energy?

Detailed Solution for Test: Energy -1 - Question 3
Batteries store energy through chemical reactions that take place within them. These reactions allow for the storage of electrical energy, which can be later released in the form of electrical current to power various devices. The chemical composition of batteries enables them to store potential energy that can be converted into kinetic energy when needed.
Test: Energy -1 - Question 4
What type of energy is associated with lifting an object to a higher elevation?
Detailed Solution for Test: Energy -1 - Question 4
Lifting an object to a higher elevation increases its potential energy due to gravity, known as gravitational potential energy. This energy is analogous to stretching an elastic band or compressing a spring, as it is stored in the object based on its position relative to the Earth's surface.
Test: Energy -1 - Question 5
Which form of energy conversion is demonstrated in hydroelectric power plants?
Detailed Solution for Test: Energy -1 - Question 5
Hydroelectric power plants demonstrate the conversion of gravitational potential energy into electrical energy. Water stored in a dam has gravitational potential energy, which is converted into kinetic energy as it flows through turbines, ultimately generating electrical energy. This process harnesses the potential energy stored in water to produce electricity.
Test: Energy -1 - Question 6

Which of the following examples best illustrates the concept of energy transfer through light?

Detailed Solution for Test: Energy -1 - Question 6

Explanation:

- Light from the sun used in photosynthesis
- This example best illustrates the concept of energy transfer through light because photosynthesis is a process where plants use light energy from the sun to convert carbon dioxide and water into glucose and oxygen.
- The light energy is absorbed by chlorophyll in the plant cells and is converted into chemical energy that can be used by the plant for growth and survival.
- This process demonstrates how light energy can be transferred and transformed into other forms of energy, highlighting the role of light in driving biological processes.

Test: Energy -1 - Question 7

What is The law of conservation of energy ?

Detailed Solution for Test: Energy -1 - Question 7
  • The law of conservation of energy states that energy cannot be created or destroyed, only transferred or transformed, guiding how we understand energy in different systems and its efficiency. 
Test: Energy -1 - Question 8
Which of the following best exemplifies wasted energy in the context of energy transfer?
Detailed Solution for Test: Energy -1 - Question 8
Wasted energy in the context of energy transfer can be seen in scenarios where energy is not used for its intended purpose. For example, the heat produced by a stove is considered wasted energy because it is not the primary outcome desired from the energy transfer process. This heat is often lost to the surroundings and is challenging to utilize efficiently.
Test: Energy -1 - Question 9
How does effective insulation contribute to reducing energy waste in a building?
Detailed Solution for Test: Energy -1 - Question 9
Effective insulation plays a crucial role in reducing energy waste by trapping heat inside a building. By preventing heat from escaping through walls, windows, and other structures, insulation helps maintain a consistent indoor temperature with less reliance on continuous heating or cooling systems. This promotes energy efficiency and reduces the overall energy consumption required to keep the space comfortable.
Test: Energy -1 - Question 10

Which statement best explains the relationship between temperature and thermal energy in an object?

Detailed Solution for Test: Energy -1 - Question 10

Answer: b) Thermal energy is the energy stored due to the motion of tiny particles within a hot object, and it increases with the object's temperature.

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