Grade 2 Science Week 10 | Practice Workbook

Grade 2 | SCIENCE

WEEK 10 • PRACTICE WORKBOOK • DAYS 46–50

Read the matching lesson in the Week 10 Student Textbook first. Write each answer on the line below its question. Day 50 is answered on your own.

Fillable Practice PDF: Open or download Week 10 fillable workbook. Type answers in the labeled fields, then save your completed copy. For graph drawings, use the printed diagram.

Week 10 Student Textbook | Week 10 Practice Workbook | Week 10 Teacher Guide | Week 9 Student Textbook | Grade 2 index

Day 46: Where Is Water Found on Earth?

Where water is

Place	Liquid or solid
Ocean	Liquid
River	Liquid
Glacier	Solid ice
Snow on a mountain	Solid

Where is most of Earth’s water found?
Answer: _________________________________________________
Which places in the table hold solid water?
Answer: _________________________________________________
Explain why a picture of Earth from space looks mostly blue.
Answer: _________________________________________________
_____________________________________________

Day 47: Salt Water and Fresh Water

Fresh or salty?

Water	Fresh or salty
Ocean	Salty
Lake	Usually fresh
Water under the ground	Usually fresh
Glacier ice	Fresh

Which water in the table is salty?
Answer: _________________________________________________
Name two places in the table with fresh water.
Answer: _________________________________________________
Most of Earth’s water is in the ocean. Explain why people still must take care of fresh water.
Answer: _________________________________________________
_____________________________________________

Day 48: Water as a Solid: Ice and Snow

Ice melt test

Ice cube placed	Minutes until fully melted
In a sunny window	20
On a shaded table	35
In the freezer	Did not melt

Which ice cube melted fastest?
Answer: _________________________________________________
Which ice cube did not melt?
Answer: _________________________________________________
Explain what the test shows about how warmth changes solid water.
Answer: _________________________________________________
_____________________________________________

Day 49: A Model of Earth’s Water

How many pieces stand for ice and glaciers?
Answer: _________________________________________________
How many pieces stand for all the other water?
Answer: _________________________________________________
Explain what your model shows about how much of Earth’s water is fresh liquid water that people can use.
Answer: _________________________________________________
_____________________________________________

Hands-on task: Model Earth’s water with 100 pieces

Count out 100 small pieces, such as dried beans or paper squares.
Make three piles: 97 pieces for the ocean, 2 pieces for ice and glaciers, and 1 piece for all other water (lakes, rivers, ponds, underground and air).
Label each pile.
Compare the piles. Talk about why the water people can drink is only a small part of Earth’s water.

My model showed:

_________________________________________________

_____________________________________________

Day 50: Independent Check: Water on Earth

Text: A Trip to the Mountains

In winter, Leo visited a tall mountain. Snow covered the top. A stream ran down the side of the mountain into a clear lake. In spring, Leo came back. Much of the snow had melted, and the stream was fuller than before.

Answer on your own. An adult may read the questions aloud but should not give the answers.

Name one place in the text where water was solid.
Answer: _________________________________________________
Name one place in the text where water was liquid.
Answer: _________________________________________________
Explain why the stream was fuller in spring, using what you know about ice and snow.
Answer: _________________________________________________
_____________________________________________