Grade 7 MAP science preparation

Which type of rocks form fossils (化石)? 

• Igneous

• Sedimentary

• Metamorphic

• Synthetic

Which formation of rocks would most likely prevent the formation of fossils? 哪种岩石的形成会阻止化石的形成？

• Evaporation of water, leaving minerals.

• Cooling of magma, forming rocks.

• Sediments piling (堆积) on top of each other forming sedimentary rock.

• Sap of a tree (树胶) surrounding insects forming amber.

Tags

NGSS.MS-LS4-1

A candle burns over a few hours. In the end there is just a little wax and a small part of the wick（腊烛芯）. Which of the following is true?

• The wax and wick were destroyed, and the matter disappeared.

• The wax was converted into energy while the wick was destroyed and disappeared.

• The wax and wick were converted into a new form of gases and ash so none of the matter was destroyed.

• The matter was transferred into another dimension where it is not available

  on Earth.

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

NGSS.MS-PS1-4

Which of the following allows you to know a chemical reaction took place?

• a new substance is formed

• the object changes in state of matter

• the object only changes in color

• the object only changes in temperature

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

Carbon dioxide (clear gas) and water (clear liquid) are converted into sugar (white solid) during photosynthesis. What type of change occurred?

• Physical, a new substance was formed.

• Physical, a mixture was formed.

• Chemical, a new substance was formed.

• Chemical, a solution was formed.

Tags

NGSS.MS-PS1-5

NGSS.MS-LS1-6

NGSS.MS-PS1-2

Which of the following is an example of a physical change (物理变化)?

• Plants changing air, water, and light into sugar.

• Dew forming on a plant.

• Plants converting carbon dioxide into oxygen.

• Animals converting oxygen into carbon dioxide.

Which of the following is a chemical change which stores energy?

• Respiration 呼吸作用

• Condensation

• Evaporation

• Photosynthesis

Tags

NGSS.MS-LS1-6

During the process of photosynthesis, carbon dioxide and water is converted into oxygen and sugars. Which of the following is true about this reaction?

• More atoms are used in the beginning than the end.

• More atoms are produced in the end than used in the beginning.

• The total number of atoms do not change in this reaction.

• All of the element atoms are converted into new element atoms.

Tags

NGSS.MS-PS1-5

Which best explains the cycle of carbon in a rain forest?

• Plants give animals carbon dioxide, while animals give plants oxygen.

• Plants give fungus carbon dioxide, while fungus give plants oxygen.

• Fungus give animals oxygen, while animals give fungus carbon dioxide.

• Animals eat plants, while plants obtain carbon dioxide from animals.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Bees pollinate flowers from the same species of plants 蜜蜂给花授粉 . The bees obtain food, and then the plants can reproduce. Which of the following best describes this situation?

• Competition

• Predation

• Parasitism

• Mutualism

Tags

NGSS.MS-LS2-2