5th Grade science

 Fifth Grade Science Games, Puzzles, Experiments, Activities

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1. Our Earth and Our Solar System 2. Motions of the Earth..3. The Earth and its Living World 4. Environmental Balance 5. Family Values 6. Rules Are for Everyone. 7. Let us Solve our own Problems 8. Public Facilities and My School 9. Maps our Companions. 10. Getting to Know India. 11. Our Home and Environment. 12. Food for All. 13. Methods of Preserving Food. 14. Transport. 15. Communication and Mass Media. 16. Water. 17. Clothes our Necessity. 18. The Environment and Us. 19. Constituents of Food. 20. Our Emotional World. 21. Busy at Work our Internal Organs. 22. Growth and Personality Development. 23. Infectious Diseases and how to Prevent them. 24. Substances, Objects and Energy. 25. Community Health and Hygiene

2. Motions of the earth

2.1. Villages with Sunrise at the Same Time...
Which villages have sunrise at the exact same moment? In India, the easternmost village in Arunachal Pradesh is Dong. Here, sunrise happens around 4:30 to 5:00 AM in summer and around 5:00 to 5:30 AM in winter. In India, the westernmost village in Gujarat is Guha. It’s at the westernmost edge of India. Here, sunrise happens around 6:30 to 7:00 AM in summer and around 7:00 to 7:30 AM in winter. Can there really be a two-hour difference in sunrise times within the same country? Believe it or not, sunrise can happen at the same time in two different countries! Sounds surprising, right? Take a globe of the Earth. Shine light on one side and keep the other side dark.

• Where is the line between light and dark?
• Do you see a strip where the east is lit and the west is dark? That’s where sunrise is happening.
• Which villages or places are on that strip of the globe? Are they in the same country?

Now, look for another line between light and dark.

• Do you see a strip where the east is dark and the west is lit? That’s where sunset is happening.
• Which villages or places are on that strip of the globe? Are they in the same country?

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2.2. Villages with Sunset at the Same Time...
Which villages have sunset at the exact same moment? In India, the easternmost village in Arunachal Pradesh is Dong. Here, sunrise happens around 4:30 to 5:00 AM in summer and around 5:00 to 5:30 AM in winter. In India, the westernmost village in Gujarat is Guha. It’s at the westernmost edge of India. Here, sunrise happens around 6:30 to 7:00 AM in summer and around 7:00 to 7:30 AM in winter. Can there really be a two-hour difference in sunrise times within the same country? Believe it or not, sunrise can happen at the same time in two different countries! Sounds surprising, right? Take a globe of the Earth. Shine light on one side and keep the other side dark.

• Where is the line between light and dark?
• Do you see a strip where the east is lit and the west is dark? That’s where sunrise is happening.
• Which villages or places are on that strip of the globe? Are they in the same country?

Now, look for another line between light and dark.

• Do you see a strip where the east is dark and the west is lit? That’s where sunset is happening.
• Which villages or places are on that strip of the globe? Are they in the same country?

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2.3. The 4 days in a yearFind which is which

The four important days in a year related to Earth's orbit and tilt are the equinoxes and solstices. These days mark significant changes in seasons due to Earth's position around the Sun. Below are the dates and their special features:

1. Vernal Equinox (Spring Equinox)
   • Date: Around March 20 or 21
   • Feature: On this day, day and night are almost equal in length (about 12 hours each) worldwide. The Sun is directly above the equator, marking the start of spring in the Northern Hemisphere and autumn in the Southern Hemisphere.
2. Summer Solstice
   • Date: Around June 20 or 21
   • Feature: This is the longest day of the year in the Northern Hemisphere, with the most daylight hours. The Sun is at its highest point in the sky, directly above the Tropic of Cancer, marking the start of summer in the Northern Hemisphere.
3. Autumnal Equinox (Fall Equinox)
   • Date: Around September 22 or 23
   • Feature: Similar to the vernal equinox, day and night are nearly equal in length. The Sun is again directly above the equator, marking the start of autumn in the Northern Hemisphere and spring in the Southern Hemisphere.
4. Winter Solstice
   • Date: Around December 21 or 22
   • Feature: This is the shortest day of the year in the Northern Hemisphere, with the least daylight hours. The Sun is at its lowest point, directly above the Tropic of Capricorn, marking the start of winter in the Northern Hemisphere.

2.4. Phases of moon at your hands

Take a big inflatable balloon and blow it up completely. Tie the opening with a string. Rub soapy water all over the balloon. Gently stick wet pieces of paper all over the balloon’s surface. Let the wet paper dry completely. Then, let the air out of the balloon and remove it carefully. Thread a string or a thin stick through the center of the dried paper shell. This is now your *Moon*! Put a lamp on the wall—this will be your *Sun*. Stand with your back facing the Sun (lamp). Hold the Moon (paper shell) on the stick at arm’s length in front of you. The Moon will look fully lit up. This is the *Full Moon* (Purnima). Now, keep holding the Moon at arm’s length and slowly turn around in place. As you turn, watch the Moon. Do you see the shape of the lit part (the Moon’s phases) changing? When you’ve turned completely and are facing the Sun, the Moon will look completely dark. This is the *New Moon* (Amavasya). This is how the phases of the Moon appear! This activity helps demonstrate how the Moon’s phases (like Full Moon, New Moon, and others) occur due to the changing angles of sunlight as seen from Earth. By using a paper model of the Moon and a lamp as the Sun, you can visualize how the Moon’s appearance changes as it orbits Earth. The experiment is simple, hands-on, and great for kids to understand the concept of lunar phases!

1. Our Earth, Our Solar System

1.1 . Puzzles Based on Our Solar System

Who Am I / Who Are We? 21 questions

1. I am the biggest and hottest object in the solar system. I send light and heat everywhere. I spin on my own, and others revolve around me. Who am I? 2. I am the closest to the Sun and the smallest planet in the solar system. It’s very hot on me, and I have no moon. Who am I? 3. I am Earth’s neighbor and shine in the evening or morning sky. I have thick clouds, which make me very hot. Who am I? 4. I have water, air, one moon, and billions of living things. Who am I? 5. I orbit around Earth and shine in the night sky. Sometimes I’m visible during the day. I cause tides in the oceans. Who am I? 6. My soil is red. I have two small moons, and your spacecraft have visited me. Who am I? 7. I am the largest planet in the solar system. I have many moons and colorful cloud bands. Who am I? 8. I have beautiful rings around me, which make me special. I am made of gas and have many moons. Who am I? 9. My color is blue-green, and I am very cold. I spin tilted on my side. Who am I? 10. I am very far from the Sun and dark blue. Strong winds blow on me. I am the last planet in the solar system. Who am I? 11. We are many and orbit around the Sun. We include the largest planet. Who are we? 12. We are not planets, but we are part of the days of the week. Who are we? 13. We are planets, but we are not part of the days of the week. Who are we? 14. I am invisible, but I cause smaller things to be pulled toward bigger things. Who am I? 15. You humans have sent some of us to the Moon, Mars, the Sun, and even in the opposite direction of the Sun. Who are we? 16. Long ago, Rakesh Sharma, an Indian man, traveled to space, and so did I. Who am I? 17. We travel in space, and because of us, your mobile phones work. Who are we? 18. We are tiny, and because of us, you can light up the sky during Diwali. Who are we? 19. We are never seen in the sky, but you show us in pictures of the solar system. Who are we? 20. You see us in the sky only when we fall. Who are we? 21. We suddenly appear in the sky, orbit the Sun, and then disappear. Who are we? Find Answers here - Firecrackers / Gravity / Sun / Mercury / Moon / Uranus / Planets / Neptune / Spacecraft / Shantanu Shukla / Satellites / Dwarf planets / Pluto / asteroids / Meteors / Comets

2. Alien Guest Alert!

Hey friends, we’ve got a super cool visitor with us!

We think they might be from somewhere in our solar system. They can only nod yes or no, but they have an amazing power—they can understand our language, though they can’t write or read it. Since they can’t handle our Earth environment, we’ve kept them safe in a special container.

Your challenge is to figure out where they’re from by asking them 10 yes-or-no questions.

One of you can be the alien! Secretly decide that you’ve come from a part of our solar system other than Earth. Think about where that place is and what the environment is like there. Imagine how life would be for you in that spot. Your friends in the group will ask you questions, and you’ll answer with a yes or no. Let’s see if your buddies can guess where you, the alien, are from!

3. Make a Model of a Satellite

Find some info about a satellite from NASA or ISRO. Look at pictures of it. Using simple materials like paper, cloth, sticks, clay, or anything you can easily get, create a model of that satellite. Then, explain to others about each part of your model and what it does, with a fun reason for why it’s important!