Eighth Grade (Grade 8) Space Exploration Questions for Tests and Worksheets

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Grade 8 Space Exploration

What space mission did not fly by the planet of Saturn?

Galileo
Cassini
Voyager 1
Voyager 2

Grade 8 Space Exploration

Explorer discovered the Van Allen radiation belts.

Grade 8 Space Exploration

What does VLA stand for?

Very Large Array
Very Large Alay
Very Large Antenna
Very Large Telescope

Grade 8 Space Exploration

Probes have been used to investigate only other planets.

True
False

Grade 8 Space Exploration

All electromagnetic waves have the same speed in empty space - the speed of light.

True
False

Grade 8 Space Exploration

The Cassegrain telescope uses a small convex mirror, a primary mirror, to reflect the light back through a hole cut in the primary mirror at the bottom end of the tube.

True
False

Grade 8 Space Exploration

Outer-atmosphere telescope that is able to see planets, stars, and other objects out to the farthest galaxies is called Hubble Space Telescope .

Grade 8 Space Exploration

A Newtonian telescope uses a small, flat mirror to reflect the light through the side of the tube to an eyepiece.

True
False

Grade 8 Space Exploration

Match the following terms to their corresponding definition.

__	Energy due to temperature	A.	Wien’s law of radiation
__	Theoretical perfect radiator	B.	Radiation spectrum
__	A wavelength is inversely proportional to its temperature	C.	Blackbody
__	Shows how much energy a body radiates at different wavelengths	D.	Astronomical observatory
__	A place equipped for the observation of sky objects	E.	Thermal radiation

Grade 8 Space Exploration

The focal length of the main lens or mirror determines the size of the image formed by a telescope.

Grade 8 Space Exploration

A telescope's diffraction is its ability to produce sharp, detail images under ideal observing conditions.

True
False

Grade 8 Space Exploration

The value of the magnifying power of a telescope depends on the eyepiece you use.

True
False

Grade 8 Space Exploration

Match the correct term with its corresponding definition.

__	Energy due to temperature	A.	Refracting
__	Shows how much energy a body radiates at different wavelengths	B.	Optical Telescope
__	Spectral ranges within which air is largely transparent to radiation	C.	Atmospheric Windows
__	Place equipped for the observation of sky objects	D.	Light-Gathering Power
__	Forms images of faint and distant stars	E.	Radiation Spectrum
__	The heart of a telescope	F.	Thermal Radiation
__	The ability of a telescope to collect light	G.	Objective
__	The size of a telescope, ex. 150-mm, or 8-mm	H.	Astronomical Observatory
__	Type of telescope that uses lens as a its objective	I.	Aperture

Grade 8 Space Exploration

The function of a telescopes objective is to gather light from a sky object and focus this light to form an image.

True
False

Grade 8 Space Exploration

Who is the first scientist to use a refracting telescope?

Galileo Galilei
Isaac Newton
Johannes Keppler
Ptolemy

Grade 8 Space Exploration

F number is the ratio of the focal length of the main lens or mirror to the aperture.

Grade 8 Space Exploration

Starlight travels in straight lines through empty space, but when waves of starlight pass close to the edge of a lens or mirror, they spread out, in an effect called diffraction .

Grade 8 Space Exploration

In what year did NASA establish a new space launch center on Cape Canaveral?

1962
1958
1961
1969

Grade 8 Space Exploration

Which of the following is NOT one of the four broad categories of satellites?

intelligence
communication
navigation
scientific

Grade 8 Space Exploration

A rocket is a device that expels gas in one direction in order to move in the opposite direction.

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Eighth Grade (Grade 8) Space Exploration Questions