Fill in the blank with the word that completes the sentence. Then, find that work in the puzzle.

Transcription

1 Classwork #1 Name: 2 nd Grade PSI Fill in the blank with the word that completes the sentence. Then, find that work in the puzzle. 1. When the Earth is facing the sun, it is time. 2. Another word for spins is 3. means to travel in a path around something 4. A is a pattern of events that repeat. 5. The orbits the Earth. 6. happens when the Earth turns away from the sun C D T F N B O C A E V I U R M Y S R G K B O W C Y H T I O M B L T I T N Z J R E D P R O T A T E S

2 1. Color the sun yellow. 2. Color the part of the Earth that is daylight blue and green. 3. Color the part of the Earth that is night time black. 4. How long does it take for the Earth to rotate? 5. How long does it take for the Earth to orbit the sun?

3 Homework #1 Name: 2 nd Grade PSI Why does the moon look different during the night? The different shapes are called the phases of the moon. The moon has phases because it orbits the Earth. The phase of the moon is how much of the moon appears lit up by the sun. The moon does not have light of its own because it is made of rock and dust. The moon looks like it changes size because different parts of it are in the shadow. The moon is not visible during a new moon because the sun does not light the side facing the Earth. In a full moon, the sun lights the entire side of the moon facing the Earth and it looks like a bright circle. It takes one month for the moon to orbit the Earth.

4 Use the reading passage and the diagram to answer the questions below. 1. Where does the moon get it s light? 2. Why does the moon look like it changes shape? 3. Explain what happens during a new moon. 4. What are phases?

5 5. In which phase does the moon look like a tiny sliver? 6. Explain how the diagram helps you better understand the moon s cycle?

6 Classwork #2 Name: 2 nd Grade PSI 1. Label the diagram with the seasons. 2. When is the first day of winter? 3. How often do the seasons repeat? 4. How long does it take for the Earth to orbit the sun? 5. What season is it when a hemisphere is pointed toward the sun? 6. What causes the direct and indirect heating of the Earth by the sun?

7 Homework #2 Name: 2 nd Grade PSI Cut out the pictures and glue them in the correct season. Winter Spring Summer Autumn

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9 Write a paragraph about your favorite season. Be sure to include: a topic sentence, at least 3 supporting details, and a closing sentence. Use the sorting activity to help you come up with ideas.

10 Classwork #3 Name: 2 nd Grade PSI Label the parts of the rock cycle: magma, sediment, igneous rock, volcanic eruption, metamorphic rock and sedimentary rock.

11 Rocks are constantly changing in what is called the rock cycle. It takes millions of years for rocks to change. There are three main types of rocks: metamorphic, igneous, and sedimentary. Read the description of the rock types and write its name on the line. Use the diagram to help you. 1. These rocks are formed when melted rock (magma) has cooled and become a solid. Pumice and granite are examples of these types of rocks. 2. These rocks are formed when pieces of rocks and minerals become joined together. Claystone and sandstone are examples of these types of rocks. 3. These rocks are made when the other two types of rocks are exposed to intense heat and pressure. Marble and slate are examples of these types of rocks.

12 Homework #3 Changing Earth Name: 2 nd Grade PSI Use the table to answer the questions about rocks. Rock Properties Uses Granite thick strong can be cut, carved, and shaped igneous rock countertops buildings Pumice Marble Chalk has tiny holes, like a sponge lightweight feels rough igneous rock thick strong can be cut, carved, and shaped metamorphic rock formed from skeletons of tiny sea animals soft wears away easily sedimentary rock pencil erasers cleaning products statues countertops drawing and writing toothpaste

13 1. Which two rocks formed when magma cools and becomes a solid? 2. Explain why marble is a better choice for a kitchen counter than chalk? 3. Pumice can float on water. Which property do you think makes this possible? Explain why.

14 4. How are marble and granite alike? How are they different? 5. What is chalk made from?

15 Classwork #4 Name: 2 nd Grade PSI Defined events happen quickly and have a clear beginning and an end. Write the name of each event under the picture: tsunami tornado earthquake flood hurricane volcanic eruption avalanche landslide blizzard

16 Write the name of each event below. 1. A large amount of water covering land that is usually dry is a. 2. A large amount of rocks and earth that suddenly moves down the side of a mountain and hill is a. 3. Trembling of part of the earth is an. 4. A large amount of snow and ice sliding down a mountainside or hill is an. 5. A destructive funnel-shaped cloud that travels across the land is a. 6. A heavy snowstorm with powerful wind is a. 7. A tropical storm with wind and heavy rain is a. 8. A sudden discharge of lava is a. 9. A huge wave produced by an earthquake or volcanic eruption is a.

17 Homework #4 Name: 2 nd Grade PSI Event Detective Read each interview. Use the clues to determine which defined event occurred. Write the name inside the word bubble. 1. I was reading a book when the ground suddenly started shaking. Books fell off the shelf. I hid under a table and covered my head. What happened? 2. It rained a lot during the storm and it was very windy. Many trees fell down. One landed on the power lines. The river overflowed and flooded the streets. What happened? 3. There was a loud noise that shook my house. I looked outside and saw a cloud of smoke and fire coming from the mountain. What happened?

18 Classwork #5 Name: 2 nd Grade PSI How are weathering and erosion alike? How are they different? Complete the Venn diagram using the phrases on the next page. Weathering Both Erosion 2 nd Grade PSI Changing Earth

19 Venn Diagram Phrases: caused by wind and water pieces of rocks are moved breakdown of rocks into smaller pieces soil is washed away shapes the Earth s surface slowed down by plants and roots 2 nd Grade PSI Changing Earth

20 Homework #5 Name: 2 nd Grade PSI Weathering is the breaking apart of rocks by wind, plants, animals, and water. Erosion is the movement of rocks due to ice, wind, and water. Read each sentence. Write W if it describes weathering and E if it describes erosion. 1. Ocean waves carry sand away from a beach. 2. The roots of a tree break apart a rock. 3. Small pieces of sand are carried by the wind 4. Rainfall causes rock and soil to move down a mountainside, resulting in a landslide. 5. Water dissolves part of a rock, making an underground cave. 6. Water freezes in a sidewalk crack and a hole forms. 7. A boulder near a river becomes smaller as water wears it down. 8. Rocks and stones become smooth as they rub against other rocks. 9. A stream moves rocks by carrying them in the current. 10. Wind blows sand into a dune. 2 nd Grade PSI Changing Earth

21 Classwork and Homework Answer Key Classwork #1 1. day 2. rotates 3. orbit 4. cycle 5. moon 6. night c d t f n b o c a e v i u r m y s r g k b o w c y h t i o m b l t i t n z j r e d p r o t a t e s hours 5. one year Homework #1 1. The moon gets it s light from the sun. 2. The moon looks like it changes shape because different parts are in the shadow. 3. During a new moon the sun does not light the side facing the earth. 4. Phases are the different shapes of the moon. 5. The moon looks like a sliver in the crescent phase. 6. accept reasonable answers. 2 nd Grade PSI Changing Earth

22 Classwork #2 spring winter summer 2. December Once a year 4. 1 year 5. Summer 6. The earth s tilt fall Homework #2 Winter Spring Christmas tree Snowman Bare tree sledding Umbrella Easter basket Planting seeds Tree with new leaves Summer Beach Last day of school Tree full of leaves swimming Autumn Tree with leaf pile Back to school Pumpkin carving scarecrow 2 nd Grade PSI Changing Earth

23 Classwork #3 igneous rock magma volcanic eruption sediment metamorphic rock sedimentary rock Paragraph Answers will vary. Homework #3 1. granite and pumice 2. Marble is thick, strong and can be shaped. Chalk is soft and easily worn away. 3. Pumice can float because it has tiny holes and is light weight. 4. Granite and marble are both thick and strong. They can be shaped, cut and carved. They are different because one granite is igneous and marble is metamorphic 5. Chalk is made from the skeletons of tiny sea animals. Classwork #4 flood avalanche earthquake tornado tsunami blizzard hurricane landslide volcanic eruption 1. flood 2. landslide 3. earthquake 4. avalanche 5. tornado 6. blizzard 7. hurricane 8. volcanic eruption 9. tsunami 2 nd Grade PSI Changing Earth

24 Homework #4 1. Earthquake 2. Hurricane 3. Volcanic Eruption Classwork #5 Weathering: breakdown of rocks into smaller pieces Both: shapes the earth s surface; caused by wind and water Erosion: pieces of rocks are moved, soil is washed away, slowed down by plants and roots Homework #5 1. Ocean waves carry sand away from a beach. E 2. The roots of a tree break apart a rock. W 3. Small pieces of sand are carried by the wind E 4. Rainfall causes rock and soil to move down a mountainside, resulting in a landslide. 5. Water dissolves part of a rock, making an underground cave. E W 6. Water freezes in a sidewalk crack and a hole forms. W 7. A boulder near a river becomes smaller as water wears it down. 8. Rocks and stones become smooth as they rub against other rocks. W W 9. A stream moves rocks by carrying them in the current. E 10. Wind blows sand into a dune. E 2 nd Grade PSI Changing Earth