Biology Grade 8 Question Preview (ID: 42792)


Biology Grade 8. TEACHERS: click here for quick copy question ID numbers.

What is the light hour
a) The time it travels in an hour
b) The average the light travels in days
c) The distance the light travels in 1 hour
d) None

Light hour is not a unit time but a unit of _____________
a) Time
b) Space
c) Distance
d) None

Astronomers use light years to measure
a) Distance between earths
b) Distance between stars and the earth
c) Distance between stars and galaxies
d) None

How long is 1 light year
a) 10 trillion kilometers
b) 10 billion km
c) 100 000 km
d) 20 billion km

Light years, minutes and hours measure
a) Time
b) Average
c) Speed
d) Distance

What is a Newtonian reflector
a) Reflects the light to an eye piece on the side of the telescope
b) Used for amateur telescopes
c) All
d) None

What is a Cassegrain reflector
a) Reflects light through a small hole in the primary mirror
b) Used for large professional telescopes
c) all
d) None

What is a compound Microscope
a) Uses 2 lenses to make things smaller
b) Uses 2 lenses to make things bigger
c) Use 1 lense
d) None

What is a cover Slip
a) Used to cover specimens on a microscope slide
b) Used to cover the experiment
c) Used to protect the machine
d) None

What is a glass slide
a) You place the specimen on the glass
b) Specimen can be observed under the microscope
c) All
d) None

What is magnifying glass or hand lens or simple microscope
a) Uses 1 lens to make things bigger
b) Uses 1 lens to make things smaller
c) Use 2 lense
d) None

What is a graduated cylinder (glass or plastic)
a) Used to measure liquid volume
b) Very accurate tool
c) Graduated in mL
d) All

What is a beaker (glass or plastic)
a) Used to stir,
b) Heat (if glass) and measure liquid volume
c) in mL
d) All

Beaker tongs
a) Used to handle beakers
b) Used to pick up specimen
c) Used to cook
d) None

What is Erlenmeyer Flask or conical flask
a) Used to cool of substances
b) The last 2
c) Glassware used to heat
d) and Store substances

What are rubber stoppers
a) Used to plug a flask
b) Or Test tube for safe keep
c) All
d) None

Test Tube
a) Used to Mix
b) Heat
c) And store substances
d) All

What is a Test Tube Rack
a) Used to hold Test tubes
b) Hold to display specieman
c) Hold the heat
d) None

What is Test Tube Holder
a) Used to hold a cold test tube
b) Used to hold a hot test tube
c) Used to keep specimen
d) None

What is Test Tube Brush
a) Used to brush your teeth
b) Used to clean test tubes
c) Used to clean the specimen
d) None

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