Grade 6 Review Semester 2 Exam

The _______ planets are big, gaseous, colder, and far from the sun.

• inner

• outer

• middle

• terrestrial

Stars with less mass will have ____________________ lives than stars with more mass.

• longer

• shorter

• the same length

Day and night are caused by Earth's _________.

• revolution

• orbit

• rotation

• eclipse

The distance between the top of one wave and the top of the next is called ______.

• wave distance

• wave height

• wave length

A _______ is the explosion of a dying, high-mass star.

• eclipse

• protostar

• white dwarf

• supernova

The white, hot core of a star that is left behind after its outer layers have expanded and drifted into space is known as a _____ _____.

• white star

• blue giant

• red star

• white dwarf

An instrument that collects and focuses light and other forms of electromagnetic radiation.

• meloscope

• telescope

• microscope

• stethoscope

The scientist who first used the telescope to make discoveries that supported the heliocentric model was ________.

• Copernicus

• Aryabhata

• Galileo

• Gandalf

What kind of galaxy is the Milky Way?

• spiral

• swirly

• irregular

• elliptical

Do radio waves have a longer or shorter wavelength compared to visible light?

• shorter

• longer