Which three statements about electromagnetic radiation are true? light is a kind of electromagnetic radiation. electromagnetic radiation can travel only short distances. electromagnetic radiation has no mass. electromagnetic radiation can travel through a vacuum. all kinds of electromagnetic radiation are invisible.

The three statements that are true about electromagnetic radiation are:

-Light is a kind of electromagnetic radiation.

-Electromagnetic radiation has no mass.

-Electromagnetic radiation can travel through a vacuum.

Explanation:

Electromagnetic radiation is a type of variable electromagnetic field, that is, a combination of oscillating electric and magnetic fields, which propagate through space, transporting energy from one place to another. From the classical point of view, electromagnetic radiation are the electromagnetic waves generated by the sources of the electromagnetic field and that propagate at the speed of light.

Electromagnetic radiation can be manifested in various ways such as radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays or gamma rays. Unlike other wave types, such as sound, which need a material medium to propagate, electromagnetic radiation can propagate through a vacuum.

d concave shape of wave rock

explanation:

the concave shape of wave rock is a very good evidence that supports the evolution of earth due to chemical weathering. if we talk about structure of   wave rock, studies have estimated that it is around 2.7 billion years old. it also serves as the foundation of evidence that it was the place where australian continent began to form.

how the structure of wave rock was created?

studies suggest that structure of wave rock was created when the surrounded area was started to weather due to which deposition of material started on the part of land which now contains wave rock.

the structure of wave rock is considered to be one of the best-known landforms in australia. at the height of around 15 cm, there can be found flared slopes which formulate the margins of hyden rock. it is now assumed by geologists that wave rock was created by subsurface water-induced weathering and not by glaciers, waves or wind.

due to deposition of material over the period of long time, the wave rock became tougher and tougher due to weathering from surrounding terrain. this makes it a physical evidence that supports   the evolution of earth due to chemical weathering.

hope it !

i think its the first one