8th Grade Science 1 Question Preview (ID: 30867)

a) radio waves

b) microwaves

c) visible light

d) gamma rays

a) the prism refracts different wavelengths of light

b) the prism acts as a lens to reflect white light

c) the prism adds colors to white light as it transmits through

d) the prism absorbs colors of white light as it passes through

a) electromagnetic waves from stars can travel through empty space without a medium

b) electromagnetic waves from stars vibrate through a medium

c) electromagnetic waves from stars transfer matter and not energy

d) electromagnetic waves from stars are mechanical waves that can travel through space

a) Sound waves are refracted off objects

b) sound waves are transmitted through objects

c) sound waves are absorbed by objects

d) sound waves are reflected off objects

a) Gamma waves because it has high energy and shorter wavelengths

b) Radio waves because it has a lower energy and longer wavelengths

c) Visible light because it is visible to the human eye

d) X-rays because they have a high energy and a high frequency

a) 80 Newtons forward

b) 120 Newtons forward

c) 100 Newtons backwards

d) 20 Newtons backwards

a) The Earth would continue to orbit the sun in an elliptical path due to the force of gravity

b) The Earth would continue to move in a straight line due to it's inertia

c) The Earth would be pulled into the Sun due to the force of gravity

d) The size of Earth would become smaller due to inertia

a) total distance times total time

b) total distance divided by total time

c) total time divided by total distance

d) total time plus total distance

a) the length of day decreases

b) the length of day increases

c) the length of day remains the same

d) the rays from the Sun hit the northern hemisphere more indirectly

a) Mercury because it is closest to the Sun

b) The Sun because it has the greatest mass

c) Earth because it is the most dense terrestrial planet

d) Jupiter because it is the largest planet

a) The Earth revolves around the Sun on a tilted axis changing the angle of the Sun's rays and daylight hours.

b) The Earth revolves around the Sun in an elliptical orbit and is sometimes closer and father from the Sun

c) The Earth's climate is always changing and is not predictable each year.

d) The Earth orbits the Sun on a tilted axis that causes one hemisphere to be closer to the Sun in summer.

a) kilometers

b) light years

c) miles

d) meters

a) Earth completes one revolution and one rotation every day

b) Earth completes one revolution in a year and one rotation in a day

c) Earth completes one revolution and rotation in a month

d) Earth completes one revolution in a year and one rotation in a month

a) according to their physical properties

b) according to where they are located

c) according to how they are made

d) according to their relative age

a) bacteria (precambrian), marine life (paleozoic), reptiles (mesozoic), mammals (cenozoic

b) mammals (cenozoic), reptiles (mesozoic,) marine life (paleozoic), bacteria (precambrian)

c) bacteria (precambrian), reptiles (mesozoic), mammals (cenozoic), marine life (paleozoic)

d) marine life (paleozoic), bacteria (precambrian), reptiles (mesozoic), mammals (cenozoic)

a) Bones and teeth

b) Skin and muscle tissue

c) Internal organs

d) An entire organisms buried slowly

a) period, epoch, era, eon

b) epoch, period, era, eon

c) era, eon, period, epoch

d) eon, era, period, epoch

a) to filter and transmit light

b) to separate white light

c) to refract light and magnify objects

d) to reflect light so objects will be more visible

a) the grass reflects the green wavelength and absorbs all the other colors

b) the grass absorbs the green wavelength and reflects all the other colors

c) the grass emits green light and our eyes absorb all other color wavelengths

d) the grass emits all colors and our eyes absorb the green wavelength

a) speed

b) amplitude

c) wavelength

d) volume