The people's education press sixth grade science final examination paper (kneeling)

1. Magnifier is an observation tool that we often use in scientific research, also known as magnifying glass. Its characteristics are middle and edge.

2. Particles like sugar are solids with regular geometric shapes, which people call.

3. Matter will change. Some changes only change the size, shape and form of matter, without producing new matter. We call this change, and some changes produce new substances, which we call.

We drop iodine on rice and see it appear on rice, which shows that there is a relationship between rice and iodine.

The moon belongs to the earth, but it can't. The various shapes it appears in the process of circle change are called, and the period of its change is about.

6. When the nails are immersed in copper sulfate solution, we can see the substance attached to the nails, and we know it is.

7. The solar eclipse and the lunar eclipse must be on the same line, so the solar eclipse occurs in the lunar calendar.

Eclipses occur in the lunar calendar.

8. For easy identification, we divide the starry sky into different regions, which are called "Ursa Major".

9. Most water pollution is caused by human activities. At present, sewage mainly includes agricultural sewage, domestic sewage, domestic sewage and domestic sewage.

10. Harmony is an important method to reduce the amount of garbage.

Second, multiple choice questions

1. The first microscope in the world was invented by a biologist named () by ............... ().

A. Darwin Levinhawk robert hooke Bacon

2. The following are side views of different magnifiers, among which () magnifier has the largest magnification. ……( )

A.B. C. D。

3. Heat sugar with candle flame for 5 minutes, and sugar .................................... ().

A. sugar that will only become liquid

B. first it becomes liquid, then it becomes black sugar.

C. a substance that first becomes water and then turns black.

4. The sign as shown in the figure is .................................... ().

A. recycling signs B. traffic signs C. green food signs

The American manned spacecraft landed on the moon successfully. ......................................................................................................................................................

A. Apollo11B. Moon C. Shenzhou VI

6. The biggest feature of the lunar terrain is that there are many ........................................ ().

A. volcano b crater c ocean

7. What won't appear in the solar eclipse is ........................................ ()

A. Total lunar eclipse B. Partial lunar eclipse C. Annular eclipse D. None of the above will appear.

8. The following garbage cannot be decomposed naturally: ................................. ()

A. weeds and vegetable leaves B. eggshells and scraps of paper C. plastic bags and coke bottles D. batteries empty jar

9. The factors affecting rust are ................................................ ().

A. Only air B. Only water C. It is the result of the interaction between air and water.

10. The starry sky changes with the changes of the four seasons of the earth. There is a star whose position remains unchanged all the year round. This star is ... ().

A. Sirius arcturus Polaris Vega

Third, the judgment question

1. You can observe the bacteria on your hands with a magnifying glass. …………………………………………( )

When the candle burns completely, it will produce water and carbon dioxide. ……………………………………( )

3. The change of generated gas may be chemical change. …………………………………………( )

After the landfill is filled with rubbish, you can build a park and grow crops on it. ………………………( )

5. Mercury is the planet .................................. with the shortest rotation period ().

6. Eclipses sometimes occur on the same day. ………………………………………( )

7. When we eat, we think rice is a little sweet because there is sugar in it. …………………………( )

8. The Milky Way is actually a shining star belt. ……………………( )

9. The mineral water we drink has no microorganisms. …………………………………………( )

10. The volume of the moon is 46/ 1 of that of the earth. …………………………………………( )

Fourth, the connection problem.

1. In the simulation experiment of moon phase change, what do the following materials or actions represent?

The semi-blackened globe and moon revolve around the earth from west to east.

The black side of the ball always faces away from the blackboard, people living on the earth.

The student with the ball walked counterclockwise around the moon illuminated by the sun.

In the small circle of several classmates, Sun.

The bright side of the moon faces the sun.

2. Connect the following experimental equipment with its functions in the experiment.

Tweezers hold the remaining onions.

Place the sliced specimen in a Petri dish.

Eyedropper dyeing

The slide absorbs a small amount of liquid.

Iodine pinch experimental material

3. Use a straight line to link the hazard of simply digging garbage pits with the corresponding design of clean landfill.

Direct contact liner between garbage and soil

Collection of combustible gas and toxic gas filtrate produced by garbage fermentation. Filtrate treatment tank

Gas discharge pipe from polluted water to soil and groundwater

A well for monitoring soil and groundwater conditions nearby.

Verb (abbreviation of verb) comprehensive ability problem

1. Please draw the moon phase at the corresponding time below.

Lunar calendar 15, 22, 27, 3, 8.

Please explain the cause of the solar eclipse and draw a schematic diagram.

Please tell me five ways to reuse plastic bags.

4. What factors are associated with Tiesheng Embroidery? Please select a factor and design an experiment.

Research questions:

Our hypothesis is:

Experimental materials:

experimental method

fill in a form

Changes in matter

Adjoint phenomenon

trait

What is the change?

Water forms ice.

Candle burning

A mixture of baking soda and white vinegar

Broken wood strips

Copper sulfate solution and nails

Iron rusts.

sharpen a pencil

6. Domestic garbage can generally be divided into four categories: recyclable garbage and other garbage (please fill in the blanks below).

Please fill in the following form according to the above categories. (Fill in serial number only)

A. glass B. napkin C. vegetable leaf D. waste battery E. peel

F. plastic bag ice cream stick fluorescent tube feces

K. peanut shell L. cardboard M. milk box N. disposable chopsticks O. broken pottery jar

Page (abbreviation of page) clothes Q. Broken bricks R. Empty wine bottles S. Rotten apples T. Syringe

Rusty wire v. Broken porcelain bowl W. Old tire

Answers to the midterm examination paper of the second volume of sixth grade science

Fill in the blanks

1. Thickness of convex lens

2. Salt crystals

3. Physical change, chemical change

4. Blue-purple chemical change

This satellite has been on for a month.

6. Copper

7. The first fifteen days of a straight line

8. Polaris Beidou constellation

9. Industrial sewage and domestic sewage

10. Reduce waste and reuse

2. Multiple choice problem

1.B 2。 B 3。 C 4 explosive C 5。 A

6.B 7。 C 8。 D 9。 C 10。 C

Three. true or false question

1.X 2。 √ 3.√ 4.X 5。 X

6.X 7。 X 8。 √ 9.X 10。 X

Four. Connection problem

Verb (abbreviation of verb) comprehensive ability problem

1.

2. When the moon runs to the side of the earth facing away from the sun, if the three are in a straight line, the earth blocks the light from the sun to the moon, so an eclipse occurs.

The sun, the earth and the moon

3. Dust-proof shoe covers are provided with sundries such as garbage bags and shopping bags.

4. See book P38

5.

Changes in matter

Adjoint phenomenon

trait

What is the change?

Water forms ice.

Morphological change

No new substances are produced.

physical change

Candle burning

Give off a dim light

Produce new substances

chemical change

A mixture of baking soda and white vinegar

Produce gas

Produce new substances

chemical change

Broken wood strips

deformation

No new substances are produced.

physical change

Copper sulfate solution and nails

Discoloration produces precipitation.

Produce new substances

chemical change

Iron rusts.

change colour

Produce new substances

chemical change

sharpen a pencil

deformation

No new substances are produced.

physical change

6. Kitchen garbage can be recycled. Other garbage in hazardous waste.

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