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Worksheets8 Grade Science - Segment Two Exam
Total questions: 17
Worksheet time: 9mins
Which statement is true about respiration?
It converts energy into food.
It breaks down food to release energy
It turns carbon dioxide into water.
It turns water into carbon dioxide.
Which of the following stars is most likely to be blue?
Star A
Star B
Star C
Star D
Which of the following methods can be used by officials to solve the problem of water pollution?
Dispose chemical wastes in dustbins.
Stop droughts and floods.
Increase the number of factories.
Use scientific solutions.
Which statement is true about the Milky Way?
It is a big planet.
It contains the universe.
It has an irregular shape.
It has several billion stars.
Which of the following statements is correct about the gases which participate in photosynthesis?
Carbon dioxide is used up, and oxygen is produced.
Oxygen is used up, and carbon dioxide is produced.
Carbon dioxide is used up, and hydrogen is produced.
Hydrogen is used up, and carbon dioxide is produced.
Which of the following contains the Milky Way galaxy?
The local group
The moon
The solar system
The sun
Why is this diagram incorrect?
Water is not used up during this process.
Glucose is not used during this process.
The arrow for oxygen should point in the opposite direction.
The arrow for carbon dioxide should point in the opposite direction.
In which part of the sun do gases heat up and rise and then cool down and sink?
Convective zone
Inner core
Photosphere
Radiative zone
Which of the following is an appropriate unit to measure large distances across the solar system?
Astronomical unit
Meter
Square mile
Year
Which of the following physical properties of stars are plotted on an HR diagram?
Absolute brightness and size
Apparent magnitude and mass
Apparent magnitude and luminosity
Absolute brightness and temperature
Which of the following statements is true about cellular respiration?
It converts energy into food.
It breaks down food to release energy.
It turns carbon dioxide into water.
It turns water into carbon dioxide.
During an experiment, Amara covered a part of a leaf of a green plant with dark paper and kept the plant in sunlight. Which statement best describes the result of this experiment?
The covered part will not receive sufficient water to make food.
The covered part will not make food in the absence of sunlight.
The uncovered part will have more chlorophyll than the covered part.
The uncovered part will receive more oxygen than the covered part.
The diagram below shows four processes, A, B, C, and D, by which carbon circulates between the atmosphere, plants, and animals.
Which process represents photosynthesis?
Process A
Process B
Process D
Process A and Process C
Which processes represent respiration?
Process A and Process C
Process B
Process D
Process A
Which process represents eating?
Process C
Process A
Process D
Process B
What color does a star typically have when it has a high surface temperature?
Red
Yellow
Blue
White
Which of the following best describes the role of sunlight in the process of photosynthesis?
It decomposes water molecules.
It converts oxygen into carbon dioxide.
It helps in the synthesis of food by providing energy.
It absorbs nutrients from the soil.
