Gr6 -NS Quiz

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Questions and Answers

What are some examples of renewable energy resources mentioned in the text?

Energy from nuclear power and geothermal sources

Energy from coal, oil, and natural gas

Energy from biomass and tidal waves

Energy from the Sun, wind, and moving water (correct)

How does a wind turbine generate electricity?

By using the energy from volcanic eruptions to turn turbines and generate electricity

By using the energy from ocean waves to turn turbines and generate electricity

By using the energy from sunlight to turn turbines and generate electricity

By using the energy from moving air to turn turbines and generate electricity (correct)

Where are wind farms usually located?

In places with no wind at all

In urban areas with high pollution levels

In places where the wind blows most of the time (correct)

In areas with heavy snowfall

When was the first wind farm in South Africa built?

2008 Signup and view all the answers

What happens at hydro-electric power stations?

The energy in falling water is changed to electrical energy Signup and view all the answers

What is the purpose of a wind pump?

To pump water using wind power Signup and view all the answers

What is the function of the box behind the wheel of a wind turbine?

It contains a generator that makes electricity when the blades turn Signup and view all the answers

What is the main source of energy for wind turbines?

Moving air Signup and view all the answers

What is the purpose of wind farms?

To generate electricity using wind power Signup and view all the answers

What is the role of moving water in generating electricity?

Moving water can be used to turn turbines to generate electricity Signup and view all the answers

What is the source of hydroelectric power generation?

Flowing water from dams Signup and view all the answers

What is the function of photovoltaic solar panels?

Converting sunlight into electricity Signup and view all the answers

What is the primary source of heat and light in our solar system?

The Sun Signup and view all the answers

How many planets are there in our solar system?

Eight Signup and view all the answers

What are moons?

Rocky bodies that travel in an orbit around a planet Signup and view all the answers

What causes day and night on each planet in our solar system?

Rotation on its own axis Signup and view all the answers

How long does Earth take to complete one revolution around the Sun?

365 days Signup and view all the answers

What is the purpose of a leap year?

To make up for the missing quarter day in the Earth's orbit around the Sun Signup and view all the answers

What is the nearest object to the Earth in the solar system?

The Moon Signup and view all the answers

How many sides of the Moon are lit by the Sun?

One Signup and view all the answers

What is the main reason the Moon shines?

It reflects the Sun's light Signup and view all the answers

How long does it take for the Moon to complete one revolution around the Earth?

28 days Signup and view all the answers

In which direction does the Moon travel as it revolves around the Earth?

Anticlockwise Signup and view all the answers

How does the Moon's rotation relate to its revolution around the Earth?

It takes the same time to rotate as it takes to revolve Signup and view all the answers

What do radio telescopes detect and record?

Radio waves emitted by bodies in space Signup and view all the answers

What is the main purpose of optical telescopes?

To make distant objects clearer and bigger Signup and view all the answers

What is the function of magnification in a telescope?

To make small objects look bigger Signup and view all the answers

What is the design feature of radio telescopes that sets them apart from optical telescopes?

They do not have lenses or mirrors Signup and view all the answers

Why are radio telescopes used in groups?

To collect much more information than a single radio telescope Signup and view all the answers

Who is credited with inventing the telescope?

Galileo Galilei Signup and view all the answers

Study Notes

The Moon, Telescopes, and Radio Telescopes

The Moon does not emit its own light; it shines due to the Sun's light falling on it
The Moon revolves around the Earth in its own orbit, taking 28 days to complete one revolution
The Moon travels in an anticlockwise direction and takes the same time to rotate on its axis as it takes to revolve around the Earth
The Earth and Moon together revolve around the Sun, with the Moon not having its own orbit around the Sun
Telescopes are instruments used to see distant objects in space and gather information
Galileo Galilei invented the telescope, enabling the discovery of planets and moons, and providing information about the bodies in space
A simple telescope consists of a long tube, an objective lens, and an eyepiece lens, which work together to make distant objects clearer and bigger
Optical telescopes are used to look through the Earth's atmosphere and are placed in areas with less light pollution
Magnification is the telescope's ability to make small objects look bigger, with larger magnification making the object appear bigger
Radio telescopes are used to detect and record radio waves emitted by bodies in space, providing different information from what is visible through optical telescopes
Radio telescopes do not have lenses or mirrors and are designed to collect different types of radio waves
A group of radio telescopes together can collect much more information than a single radio telescope

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Description

Test your knowledge about the Moon, telescopes, and radio telescopes with this quiz. Learn interesting facts about the Moon's orbit, the invention of telescopes, and the differences between optical and radio telescopes.