Animals are made up of many atoms. What happens to the atoms after an animal has died?

one) The diagram below shows an case of interdependence among aquatic organisms. During the twenty-four hour period the organisms either apply up or give off (a) or (b) as shown past the arrows.

Choose the correct respond for (a) and (b) from the alternatives given.

A)(a) is oxygen and (b) is carbon dioxide.
B) (a) is oxygen and (b) is carbohydrate.
C) (a) nitrogen and (b) is carbon dioxide.
D)(a) is carbon dioxide and (b) is oxygen.
Eastward)(a) is carbon dioxide and (b) is carbohydrate.

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2) What is the best reason for including fruits and leafy vegetables in a salubrious diet?

A) They have a loftier water content.
B)They are the all-time source of protein.
C) They are rich in minerals and vitamins.
D) They are the best source of carbohydrates.

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3) On cold days, snakes usually lie very still and eat little or nothing, while birds usually move around and eat a lot of food. Which statement best explains this?

A) Both animals are common cold-blooded, only without feathers to go on warm snakes get too common cold to motion..
B) Unlike birds, snakes are warm-blooded; they must hibernate during cold weather.
C) Unlike snakes, birds are cold-blooded; they are less afflicted by the common cold than snakes
D) Unlike snakes, birds are warm-blooded; they must eat nutrient to maintain a constant temperature.

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4)

Which statement is consistent with the data in the table?

A) More oxygen production occurs near the surface because there is more lite at that place.
B)More oxygen production occurs almost the bottom because at that place are more plants there.
C)The greater the water pressure, the more than oxygen production occurs.
D)The rate of oxygen product is not related to depth.

_______________________________________________________________________________ five) What features do all insects have?

A) 2 legs and 4 body parts
B) four legs and 2 trunk parts
C) vi legs and 3 body parts
D) eight legs and 3 body parts _______________________________________________________________________________

six) Which is an instance of a chemical reaction?

A) The melting of ice.
B) The grinding of salt crystals to pulverization.
C) The called-for of wood.
D) The evaporation of water from a puddle. _______________________________________________________________________________

7) If a neutral cantlet loses an electron, what is formed?

A) A gas.
B) An ion.
C) An acrid.
D) A molecule.

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8) Animals are made upwardly of many atoms. What happens to the atoms later on an beast has died?

A) The atoms stop moving.
B) The atoms recycle back into the environment.
C) The atoms split into simpler parts and then combine to form other atoms.
D) The atoms no longer be once the animal has decomposed.

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Filtration using the equipment shown can exist used to separate which materials?

A) A solution of copper sulfate and water.
B) A solution of sodium chloride and h2o.
C) A mixture of booze and h2o.
D)A mixture of mud and water
Eastward) A mixture of sand and sawdust. _______________________________________________________________________________ 10) Which gas could cause a glowing splint to outburst into flame? A) Neon
B) Oxygen
C) Nitrogen
D)Carbon dioxide _______________________________________________________________________________ 11) A uniform rod is pivoted at its center. It is acted on by two forces in the plane. Each force has the same size, equal to 10N (newtons). In which case is there a turning consequence? _______________________________________________________________________________ 12) A tight metallic lid on a jar of pickles may loosen when information technology has been held in hot h2o. This is because the hot water causes the
A) glass jar to contract.
B) metal lid to contract.
C) glass jar to expand more than than the metal lid expands.
D)metal hat to expand more than the glass jar expands. _______________________________________________________________________________ 13)A student put 100ml. of h2o in each of these open containers and permit them stand up for a solar day. Which container probably lost most h2o due to evaporation? _______________________________________________________________________________ xiv) 14) When white calorie-free shines on Peter'southward shirt, the shirt looks blue. Why does the shirt look blue?

A) It absorbs all the white calorie-free and turns most of it into blueish light.
B)It reflects the bluish role of the low-cal and absorbs most of the residual.
C) Information technology absorbs only the bluish part of the light.
D)Information technology gives off its own bluish lite.

_______________________________________________________________________________ 15) The drawing shows an apple falling to the ground. In which of the three positions does gravity act on the apple tree? A) 2 only
B) i and 2 but
C) 1 and three but
D) one,2, and 3 _______________________________________________________________________________ sixteen) Which BEST describes the surface of the Earth over billions of Years?

A) A apartment surface is gradually pushed up into college and higher mountains until the World is covered with mountains.
B) Loftier mountains gradually vesture downwardly until well-nigh of the Earth is at sea level.
C) High mountains gradually article of clothing downwards as new mountains are continuously beingness formed, over and over again.
D) High mountains and flat plains stay adjacent for billions of years with little change.

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17) Fossil fuels were formed from? A) Uranium
B) Sea water
C) Sand and gravel
D) Dead plants and animals _______________________________________________________________________________ eighteen) Air is made up of many gases. Which gas is establish in the greatest corporeality? A) Nitrogen
B) Oxygen
C) Carbon Dioxide
D) Hydrogen _______________________________________________________________________________ 19) Which statement explains why daylight and darkness occur on World? A) The Earth rotates on its axis.
B) The Sun rotates on its axis.
C) The World's axis is tilted.
D) The Earth revolves around the Sun. _______________________________________________________________________________ 20) How long does it accept light from the nearest star other than the Sun to attain Earth? A) Less than 1 2d
B) About 1 hour
C) About 1 month
D) About four years _______________________________________________________________________________ 21) The diagrams show different trials Abdul carried out with carts having different-sized wheels. He started them from different heights and the blocks he put in them were of equal mass. He wants to exam this idea: The heavier a cart is, the greater its speed at the bottom of a ramp. Which three trials should he compare?

A) G, T, and X
B) O, T, and Z
C) R, U, and Z
D) Due south, T, and U
East) S,W, and Ten

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22) Maria collected the gas given off by a glowing piece of charcoal. The Gas was so bubbled through a small corporeality of colorless limewater. Part of Maria'southward study stated, "Later the gas was put into the jar, the limewater gradually inverse to a milky white color." This argument is

A) An observation
B) A conclusion
C) A generalization
D) An supposition of the investigation
East) A hypothesis

_______________________________________________________________________________ 23) One of the chief causes of acid rain is A) Waste acrid from chemical factories being pumped into rivers.
B) Acrid from chemical laboratories evaporating into the air.
C) Gases from called-for coal and oil dissolving in h2o in the atmosphere
D) Gases from air conditioners and refrigerators escaping into the atmosphere. _______________________________________________________________________________ 24) The diagram shows five different Celsius Thermometers. The body temperature of sick people ranges from 36 degrees Celsius to 42 degrees Celsius. Which thermometer would be well-nigh suited for accurately measuring body temperature? A) thermometer A
B) thermometer B
C) thermometer C
D) thermometer D
East) thermometer East _______________________________________________________________________________ 25) Whenever scientists advisedly measure out whatever quantity many times, they wait that A) All of the measurements will exist exactly the same.
B) Only two of the measurements volition be exactly the same.
C) All but one of the measurements volition exist exactly the same.
D) Well-nigh of the measurements will be close but not exactly the same. _______________________________________________________________________________

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