Science Review

Fiber optic and satellite both use _______ to transmit info.

• waves

• wires

• data

• electricity

Correctly identify the wave interactions in order of the picture.

• transmit, reflect, absorb

• reflect, absorb, transmit

• absorb, reflect, transmit

• reflect, transmit, absorb

The magnetic force is stronger when magnetic objects are_________.

• closer together

• perpendicular

• farther apart

• parallel

Which choice does NOT increase the strength of an electromagnet?

• increased number of coils

• larger iron nail

• increased battery size

• increased size of paperclips

stronger electromagnet can __________.

• generate electricity

• pick up more paperclips

• pick up fewer paperclips

• make people love science

S waves only travel through _________.

• liquids

• gases

• solids

• space

Similar fossils from the same time period may indicate one evolved from the other.

• true

• false

• fossil

• evolution

An emission spectra show a blue shift. This means the Galexy is moving

• toward earth

• away from earth

• in circles

• north

What is one way to create more energy in a wave?

• decrease frequency

• increase the wavelength

• increase frequency

• decrease amplitude

Which line indicates a slower speed?

• both are going the same speed

• line 1

• neither lines show motion

• line 2