Science Exercise (Preparation Of Mid-term Exam Of Grade 2 Semester 2 Of Cambridge School)

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1. We can see a ______________ when an object blocks the light.

Explanation

When an object blocks the light, it creates a shadow. A shadow is a dark area that is formed on a surface when an object blocks the path of light. This occurs because the object prevents the light from reaching the surface behind it, resulting in a shadow being cast. Therefore, the correct answer is shadow.

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About This Quiz
Science Exercise (Preparation Of Mid-term Exam Of Grade 2 Semester 2 Of Cambridge School) - Quiz

This Science Exercise is designed for Grade 2 students at Cambridge School, preparing for their semester 2 mid-term exam. It covers basic concepts like sources of light, properties... see moreof the sun and moon, and identification of natural light sources. see less

2. A _______________ is used to turn on or turn off the electricity.

Explanation

A switch is a device that is used to control the flow of electricity by turning it on or off. It acts as a bridge between the power source and the electrical device, allowing the user to easily control the flow of electricity. By flipping the switch to the "on" position, the circuit is completed and electricity can flow, while flipping it to the "off" position breaks the circuit and stops the flow of electricity. Therefore, a switch is the correct answer for this question.

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3. This animal can make light in the night . It is a __________

Explanation

Fireflies are known for their ability to produce light through a process called bioluminescence. They have specialized cells in their abdomen that produce a chemical reaction, resulting in the emission of light. This adaptation helps them attract mates and communicate with each other in the dark. Fireflies are commonly seen flashing their lights during the night, making them the correct answer for an animal that can make light in the night.

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4. Lamp, computer, iron, and television are thing in our house that uses the power of _________________ .

Explanation

The correct answer is electricity because all the mentioned objects - lamp, computer, iron, and television - require electricity to function. They need an electrical power source to operate and perform their intended tasks. Without electricity, these objects would not be able to provide light, heat, or perform any electronic functions.

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5. When there is very little light or no light is called _____________ .

Explanation

Darkness refers to the absence or very low levels of light. When there is little or no light, it is referred to as "dark." This is the opposite of brightness, which is associated with high levels of light. Darkness is commonly experienced during nighttime or in places where there is no source of light. It is a condition that limits visibility and makes it difficult to see or perceive objects.

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6. Moon ________ the sun's light.

Explanation

The moon reflects the sun's light.

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7. A light source that has batteries and bulb is called ____________ . We can also hold it using our hands.

Explanation

A light source that has batteries and a bulb is called a torch. It is portable and can be held using our hands. Torches are commonly used for providing light in dark areas or during power outages.

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8. These are light sources, except ______________ .

Explanation

The given question asks for a light source, except for one option. Earth is not a light source, as it does not emit light on its own. Stars emit light, as they are massive balls of gas that produce energy through nuclear fusion. Torches are also light sources, as they produce light through the combustion of fuel. However, earth does not emit light and relies on external sources of light, such as the sun, for illumination.

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9. Electricity can pass through it. It is a ______________________ .

Explanation

The given correct answer is "conductor". A conductor is a material that allows electricity to pass through it easily. It has free electrons that can move freely within the material, allowing the flow of electric current. In contrast, an insulator does not allow the flow of electricity, while wood is a poor conductor of electricity.

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10. What is it?It can store electricity.It is the other name of battery.It is a ___________________ .

Explanation

A cell is a device that can store electricity and is commonly referred to as a battery. It is a small electrochemical device that converts chemical energy into electrical energy. Cells are used in various electronic devices such as mobile phones, laptops, and remote controls to provide power for their operation.

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11. Wire is made from _____________ .

Explanation

Wire is commonly made from metal, such as copper, aluminum, or steel. These metals possess the necessary properties like conductivity, malleability, and tensile strength required for wires to transmit electricity or carry signals. Rubber and wood are not suitable materials for making wires as they lack the required conductivity and strength.

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12. Sun is the nearest ____________ to the earth.

Explanation

The Sun is the nearest star to the Earth. While the other options listed are also celestial bodies, the Sun is specifically classified as a star. It is the closest star to our planet and is essential for providing light, heat, and energy to sustain life on Earth.

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13. Bright glow from a lamp that allows us to see is _________________ .

Explanation

A bright glow from a lamp is caused by light. Light is a form of electromagnetic radiation that allows us to see. It is emitted by a light source such as a lamp.

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We can see a ______________ when an object blocks the light.
A _______________ is used to turn on or turn off the electricity.
This animal can make light in the night . It is a __________
Lamp, computer, iron, and television are thing in our house that uses...
When there is very little light or no light is called _____________ .
Moon ________ the sun's light.
A light source that has batteries and bulb is called ____________ . We...
These are light sources, except ______________ .
Electricity can pass through it. It is a ______________________ .
What is it?It can store electricity.It is the other name of battery.It...
Wire is made from _____________ .
Sun is the nearest ____________ to the earth.
Bright glow from a lamp that allows us to see is _________________ .
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