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Short Stories and Questions about Nature and Science - Third Grade (Grade 3)

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Grade 3 Nature and Science (Stories) CCSS: CCRA.R.2, CCRA.R.10, RI.3.2, RI.3.10
What's the strongest muscle in the human body? That question is actually difficult to answer.

The human        body        has three different kinds of muscles (cardiac, skeletal, and smooth) and there are hundreds of muscles in the        body       . Each muscle works to help make the body          strong          as a whole. However, there are a few muscles that do more        work        than many of the others.

Eye Muscles
The muscles in your eyes, particularly the muscles on the outside of your        eyes        do a lot of work. These external muscles help your eye adjust its position so it can        keep        a steady gaze. They can move over 10,000         times         in an hour. That's a lot of work!

Gluteus Maximus
The gluteus maximus is a         large         muscle. In fact, it's the           largest           in your body. It helps to keep your body upright and            controls            your posture. It also works against gravity, which means it has to be very strong.

Heart
Many people think the         heart         is your strongest muscle because it works the hardest. Your heart pumps blood      24      hours a day. During your lifetime, it can beat over 3 billion         times        . It's what helps keep you         alive        .

Masseter
The masseter is a          muscle          in your jaw. It helps you close your         teeth         with tremendous force.

Soleus
Below your calf muscle is your soleus. This muscle helps you        walk       , run, and dance. It works against gravity to help you         stand         up and requires a lot of            strength            to keep you moving.

Tongue
Your tongue is always at work, even when you think it's not. Your tongue is actually a         group         of muscles. It helps you         speak        , it helps you process foods, and all day long it helps move saliva around in your mouth and        down        your throat.

All of the muscles in your body work very        hard        to help make sure everything runs smoothly. Which muscle do you think is the             strongest             of them all?
Grade 3 Nature and Science (Stories) CCSS: CCRA.R.5, RI.3.5

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The author provides the example of the ball on the merry-go-round to describe the Coriolis Effect. What other text feature would help readers understand the effect?
  1. A diagram of how the Coriolis Effect works
  2. A picture of a hurricane moving
  3. An image of water in a toilet
  4. Another description like the merry-go-round
Grade 3 Nature and Science (Stories) CCSS: CCRA.R.2, CCRA.R.10, RI.3.2, RI.3.10
When you look up into the sky, sometimes you can see stars. The number of         stars         you can see depends on the number of clouds in the sky. It also depends on the amount of light pollution. It even depends on the strength of your eyes. In most places, on a clear evening, you can see             thousands             of stars. Some of the stars sit alone in the sky. Others are part of constellations. Whatever you see, it is only a         small         sampling of the stars that exist in the universe.

How many stars are in the universe?

Scientists don't have an exact answer. The universe is made up of            galaxies           . Scientists guess there are over 100 billion galaxies in the universe. Some galaxies are small. Some galaxies are         large        . The number of stars in each galaxy varies, but it's safe to say that each galaxy has at least one star. That means there are over 100 billion stars in the universe.

In fact, there are over 300 billion stars in the            universe           . How do scientists know? Because the galaxy we live in, called the Milky Way, has over 300 billion stars alone. When you look up in the       sky       and see a few thousand stars, you're actually only looking at a small number of the over 300 billion stars in the galaxy and trillions, zillions, or possibly even gazillions of stars in the          entire          universe.
Grade 3 Nature and Science (Stories) CCSS: CCRA.R.2, CCRA.R.10, RI.3.2, RI.3.10
When you look up into the sky, sometimes you can see stars. The number of         stars         you can see depends on the number of          clouds          in the sky. It also depends on the amount of light pollution. It even depends on the strength of your eyes. In most places, on a clear evening, you can see             thousands             of stars. Some of the stars sit alone in the       sky      . Others are part of constellations. Whatever you see, it is only a         small         sampling of the stars that exist in the universe.

How many stars are in the universe?

Scientists don't have an exact answer. The universe is made up of            galaxies           . Scientists guess there are over 100 billion galaxies in the universe. Some galaxies are small. Some galaxies are         large        . The number of stars in each galaxy varies, but it's        safe        to say that each galaxy has at least one star. That means there are        over        100 billion stars in the universe.

In fact, there are over 300 billion stars in the            universe           . How do scientists know? Because the          galaxy          we live in, called the Milky Way, has over 300 billion         stars         alone. When you look up in the       sky       and see a few thousand stars, you're actually only           looking           at a small number of the over 300 billion stars in the galaxy and trillions, zillions, or possibly even gazillions of stars in the          entire          universe.
Grade 3 Nature and Science (Stories) CCSS: CCRA.R.8, RI.3.8

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After reading the passage, which type of scientists do you think the author consulted to get the information about snowflakes?
  1. Physicists who deal with force and motion
  2. Chemists who deal with elements and atoms
  3. Biologists who deal with plants and animals
  4. Geologists who deal with rocks and the land
Grade 3 Nature and Science (Stories) CCSS: CCRA.R.2, CCRA.R.10, RI.3.2, RI.3.10
If you have ever seen a golf ball, you know it is a small round ball with a lot of little ridges or holes on it. Those ridges or         holes         are called dimples.

Golf balls were not always made with           dimples          . The first golf balls were made from leather. They were stuffed with goose feathers. Some people called them featheries. All balls were made by hand and very             expensive             to buy.

In the 1840s, the guttie ball was introduced. It was made of rubber. In the 1880s, the gutties began to be made with patterns on the balls. The most popular           pattern           was called Bramble. It was a series of bumps in circles on the balls. The bumps became popular because golfers realized that scratches and bumps on the surface helped the        ball        travel further.

In the early 1900s, the golf balls golfers use today were first developed. They were made of two halves fused            together            so they had air in the middle. This made them lighter and helped them travel further. Companies then added the dimples to make the balls able to travel even           further           and much faster.

Why do dimples make the balls travel faster and further? They create multiple layers of       air       around the ball. One layer moves faster than the other, which helps increase the ball's speed. Most golf balls         today         have between 300 and 500 dimples.

Companies are constantly testing the number, depth, and position of the dimples to try to make sure they have the        best        golf ball available for every golfer. Some golfers may want a ball with more dimples. Some may want a ball with         fewer         dimples. It all depends on how they play the game.
Grade 3 Nature and Science (Stories) CCSS: CCRA.R.2, CCRA.R.10, RI.3.2, RI.3.10
What's the strongest muscle in the human body? That question is actually difficult to answer.

The human        body        has three different kinds of muscles (cardiac, skeletal, and smooth) and there are hundreds of muscles in the body. Each muscle works to help make the body strong as a whole. However, there are a few muscles that do more        work        than many of the others.

Eye Muscles
The muscles in your eyes, particularly the muscles on the outside of your        eyes        do a lot of work. These external muscles help your eye adjust its position so it can keep a steady gaze. They can move over 10,000 times in an hour. That's a lot of work!

Gluteus Maximus
The gluteus maximus is a large muscle. In fact, it's the           largest           in your body. It helps to keep your body upright and controls your posture. It also works against gravity, which means it has to be very strong.

Heart
Many people think the heart is your strongest muscle because it works the hardest. Your heart pumps blood 24 hours a day. During your lifetime, it can beat over 3 billion         times        . It's what helps keep you alive.

Masseter
The masseter is a muscle in your jaw. It helps you close your         teeth         with tremendous force.

Soleus
Below your calf muscle is your soleus. This muscle helps you walk, run, and dance. It works against gravity to help you         stand         up and requires a lot of strength to keep you moving.

Tongue
Your tongue is always at work, even when you think it's not. Your tongue is actually a         group         of muscles. It helps you speak, it helps you process foods, and all day long it helps move saliva around in your mouth and down your throat.

All of the muscles in your body work very hard to help make sure everything runs smoothly. Which muscle do you think is the             strongest             of them all?
Grade 3 Nature and Science (Stories) CCSS: CCRA.R.1, RI.3.1

This question is a part of a group with common instructions. View group »

Grade 3 Nature and Science (Stories) CCSS: CCRA.R.2, CCRA.R.10, RI.3.2, RI.3.10
If you have ever seen a golf ball, you know it is a small         round         ball with a lot of little ridges or holes on it. Those ridges or         holes         are called dimples.

Golf balls were not always made with           dimples          . The         first         golf balls were made from leather. They were stuffed with goose            feathers           . Some people called them featheries. All balls were made by hand and very             expensive             to buy.

In the 1840s, the guttie ball was introduced. It was        made        of rubber. In the 1880s, the gutties began to be made with patterns on the balls. The most popular           pattern           was called Bramble. It was a series of         bumps         in circles on the balls. The bumps became popular because golfers realized that scratches and bumps on the           surface           helped the        ball        travel further.

In the early 1900s, the golf balls golfers       use       today were first developed. They were made of two halves fused            together            so they had air in the middle. This made them           lighter           and helped them travel further. Companies then added the dimples to make the balls able to travel even           further           and much faster.

Why do dimples make the balls travel faster and further? They create multiple layers of       air       around the ball. One layer moves          faster          than the other, which helps increase the ball's speed. Most golf balls         today         have between 300 and 500 dimples.

Companies are constantly           testing           the number, depth, and position of the dimples to try to make sure they have the        best        golf ball available for every golfer. Some golfers may want a ball with more dimples. Some may want a ball with         fewer         dimples. It all depends on how they        play        the game.
Grade 3 Nature and Science (Stories) CCSS: CCRA.R.1, RI.3.1

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Which way does a toilet flow in the southern hemisphere?
  1. Clockwise
  2. Counterclockwise
  3. It depends on the toilet
  4. Both ways at once
Grade 3 Nature and Science (Stories) CCSS: CCRA.R.1, RI.3.1

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Grade 3 Nature and Science (Stories) CCSS: CCRA.R.5, RI.3.5

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Why does the author provide details on how to make a paper snowflake?
  1. To offer a fun activity related to snowflakes
  2. To help the reader understand the differences in snowflakes
  3. To make the article on snowflakes stick in the reader's memory
  4. To introduce a different type of snowflakes to the reader
Grade 3 Nature and Science (Stories) CCSS: CCRA.R.1, RI.3.1

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Grade 3 Nature and Science (Stories) CCSS: CCRA.R.3, RI.3.3

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According to the author, which muscle works the hardest?
  1. The gluteus maximus
  2. The masseter
  3. The heart
  4. The eye muscle
Grade 3 Nature and Science (Stories) CCSS: CCRA.R.1, RI.3.1

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Grade 3 Nature and Science (Stories) CCSS: CCRA.R.8, RI.3.8

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The author says there are hundreds of muscles in the human body.
Why did the author decide to write about the muscles in this passage?
  1. They are the muscles with easiest names to pronounce.
  2. They are the muscles that do more work than others.
  3. They are the muscles that are most easy to see.
  4. They are the muscles that are most popular.
Grade 3 Nature and Science (Stories) CCSS: CCRA.R.1, RI.3.1

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Why is the Coriolis Effect especially noticeable during hurricanes?
  1. Because hurricanes involve a lot of water
  2. Because hurricanes come with hard and fast winds
  3. Because hurricanes stir up a lot of sand
  4. Because hurricanes get more attention than other storms
Grade 3 Nature and Science (Stories) CCSS: CCRA.R.3, RI.3.3

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Which reason best explains why your skin goes back to normal when you get out of the tub?
  1. Your nerves tell it to
  2. The water dries up
  3. Your body warms up
  4. The sebum comes back
Grade 3 Nature and Science (Stories) CCSS: CCRA.R.3, RI.3.3

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What is the best way to tell when your hair will turn gray?
  1. Look at the roots of your hair
  2. Look it up on a chart
  3. Look at other family members
  4. Look at how much stress you have
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