Life Science - 8th Grade - Chapter 4-6 Review
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Life ScienceSeton Home Study School EditionAll Creatures Great and Small
- 1.Which of the following is incorrect?
- A.
The triple beam balance is also called the pan balance
- B.
The triple beam balance measures the mass of an object
- C.
The pan balance measures the weight of an object
- 2.A thermometer is used to measure calories.
- A.
True
- B.
False
- 3.The Bunsen Burner is used in many laboratories to
- A.
Measure temperature.
- B.
Magnify objects so they may be more easily seen.
- C.
Measure liquids.
- D.
Provide heat.
- 4.Which of the following is not a part of the compound microscope?
- A.
Eyepiece
- B.
Objective lens
- C.
Stage
- D.
Rider
- E.
Arm
- F.
Nose piece
- 5.A carefully marked tube of glass or plastic that is used to determine the volume of a liquid is called a
- A.
Compound microscope
- B.
Graduated cylinder
- C.
Compound cylinder
- D.
Graduated microscope
- E.
Granulated cylinder
- F.
Bunsen Burner
- 6.
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What is this instrument?- A.
Bunsen Burner
- B.
Compound Microscope
- C.
Graduated Cylinder
- D.
Thermometer
- 7.A compound microscope is used to measure very small objects or organisms.
- A.
True
- B.
False
- 8.Bright light will "scare" many microbes away, which part of the compound microscope allows you to reduce the light?
- A.
Stage
- B.
Diaphragm
- C.
Mirror
- D.
Nose piece
- E.
High power objective
- F.
Body tube
- G.
Coarse adjustment
- 9.Which of the following is the smallest?
- A.
Neutron
- B.
Electron
- C.
Atom
- 10.Which of the following is the smallest?
- A.
Neutron
- B.
Nucleus
- C.
Molecule
- 11.Which of the following is the smallest?
- A.
Atom
- B.
Nucleus
- C.
Molecule
- 12.Which of the following are elements? (check 4)
- A.
Hydrogen
- B.
Seawater
- C.
Oxygen
- D.
Plasma
- E.
Protoplasm
- F.
Sulfur
- G.
Air
- H.
Carbon
- 13.Which of the following are compounds? (check 4)
- A.
Sodium
- B.
Seawater
- C.
Oxygen
- D.
Plasma
- E.
Protoplasm
- F.
Chlorine
- G.
Air
- H.
Carbon
- 14.An atom is the smallest part of an element with all the properties of the element.
- A.
True
- B.
False
- 15.An atom is the smallest part of a compound with all the properties of the compound.
- A.
True
- B.
False
- 16.An molecule is the smallest part of a compound with all the properties of the compound.
- A.
True
- B.
False
- 17.A molecule is the smallest part of an element with all the properties of the element.
- A.
True
- B.
False
- 18.Mass is the downward force of an object due to gravity.
- A.
True
- B.
False
- 19.Weight is the downward force of an object due to gravity.
- A.
True
- B.
False
- 20.Weight is the amount of matter in an object.
- A.
True
- B.
False
- 21.The nucleus of an atom is the ______________________.
- A.
Dense center region
- B.
Very tiny negative particles
- C.
Orbit that the particles follow around the dense center region
- D.
Empty space within it
- 22.Atoms are mostly made up of empty space.
- A.
True
- B.
False
- 23.Select all that are correct.
- A.
Neutrons have a positive charge
- B.
Neutrons have a negative charge
- C.
Neutrons do not have a charge
- D.
Protons have a positive charge
- E.
Protons have a negative charge
- F.
Protons do not have a charge
- G.
Electrons have a positive charge
- H.
Electrons have a negative charge
- I.
Electrons do not have a charge
- 24.There are more than __________ kinds of atoms.
- A.
10000
- B.
1000
- C.
100
- D.
10
- 25.Na is the symbol for _______________.
- A.
Nitrogen
- B.
Sulfur
- C.
Iron
- D.
Sodium
- 26.Fe is the symbol for ________________.
- A.
Zinc
- B.
Iron
- C.
Phosphorous
- D.
Iodine
- 27.The symbol for oxygen is __________.
- A.
O
- B.
X
- C.
Y
- D.
N
- 28.The symbol for potassium is ________________.
- A.
P
- B.
O
- C.
T
- D.
K
- 29.Approximately how many atoms can be found in a single drop of water?
- A.
15 million
- B.
15 billion
- C.
15 trillion
- D.
15 billion trillion
- E.
15 trillion gazillion
- 30.An element is ________________________________________.
- A.
The smallest part of an atom with all the properties of an atom
- B.
A simple substance that cannot be broken down by ordinary chemical means.
- C.
An individual piece of a compound
- D.
A group of different kinds of compounds that are together but keep their own properties
- 31.A molecule is ________________________________________.
- A.
The smallest part of an atom with all the properties of an atom
- B.
A simple substance that cannot be broken down by ordinary chemical means.
- C.
An individual piece of a compound
- D.
A group of different kinds of compounds that are together but keep their own properties
- 32.Check each item if it is part of the structure of an atom.
- A.
Protons
- B.
Hydrons
- C.
Electrons
- D.
Neutrons
- E.
Cyclons
- 33.What percent of your body weight is water?
- 34.Which element is the most abundant in your body?
- A.
Water
- B.
Oxygen
- C.
Hydrogen
- D.
Sodium
- 35.Protoplasm is living matter.
- A.
True
- B.
False
- 36.Protoplasm is a cell wall.
- A.
True
- B.
False
- 37.Osmosis is ___________________________________.
- A.
Where the cell releases energy
- B.
A constant circular motion
- C.
Living material
- D.
Diffusion of water through a cell membrane
- 38.Chromosomes are ______________________________.
- A.
Where the cell releases waste
- B.
Tube like parts where reactions take place
- C.
Long thread-like chemicals that contain the instructions for the cell
- D.
Used by plants to capture sunlight
- 39.Mitochondrion is ___________________________________.
- A.
Where the cell releases energy
- B.
A constant circular motion
- C.
Living material
- D.
Diffusion of water through a cell membrane
- 40.All living things are made up of more than 15,000,000,000 cells.
- A.
True
- B.
False
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