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Questions and Answers
Which of the following is NOT a use of water?
Which of the following is NOT a use of water?
- Agriculture
- Cleaning
- Swimming
- Navigation (correct)
The Earth's rotation takes 24 hours.
The Earth's rotation takes 24 hours.
True (A)
What helps carry nutrients and oxygen to the brain?
What helps carry nutrients and oxygen to the brain?
Water
The sun's distance from Earth is approximately ______ million kilometers.
The sun's distance from Earth is approximately ______ million kilometers.
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Match the following planets with their mnemonic names:
Match the following planets with their mnemonic names:
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What is the primary reason life exists on Planet Earth?
What is the primary reason life exists on Planet Earth?
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The Sun rises in the West.
The Sun rises in the West.
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Name one of the objects that orbit the Sun besides planets.
Name one of the objects that orbit the Sun besides planets.
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Turning off the tap while ______ helps conserve water.
Turning off the tap while ______ helps conserve water.
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Which planet is known as 'Just' in the mnemonic?
Which planet is known as 'Just' in the mnemonic?
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Study Notes
Water Uses
- Water is used for agriculture, bathing, cleaning, drinking, and swimming.
- Turning off the tap while brushing teeth, washing hands, and washing dishes is essential for water conservation.
Importance of Water to the Body
- Water helps keep lungs moist.
- Water helps protect organs and tissues.
- Water helps dissolve minerals.
- Water helps carry nutrients and oxygen to the brain.
Solar System
- The Sun is a star that gives out heat and light energy.
- The Sun is 109 times the diameter of Earth.
- 1,300,000 planet Earths can fit inside the Sun.
- The Sun is 149.6 million kilometers away from Earth.
- There are 8 planets in our solar system:
- Mercury
- Venus
- Earth
- Mars
- Jupiter
- Saturn
- Uranus
- Neptune
Solar System Objects
- Asteroids are small rocky objects that orbit the Sun.
- Comets are objects containing ice and dust that orbit the Sun.
Earth and Life
- Life exists on Earth because of its position from the Sun and the atmosphere around it.
Day and Night
- Day and night happen because of the Earth's rotation on its axis.
- Each rotation of the Earth takes 24 hours.
- The Sun rises in the East and sets in the West.
- As Earth rotates, it also revolves around the Sun.
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