1.What is refraction? The bending of light as it passes through matter
2.What type of lens would you use to magnify your view of a butterfly?
Concave
3.What is a sound wave?
Sound waves are waves of energy moving through matter.Sound waves are vibrations of molecules,molecules must be present for sound to travel
4.If a bright,loud,explosion took place in space, would it be seen or heard on Earth?
It would be seen if it wasn't covered up with something but it wont be heard because sound needs material such as air or water to travel through
5.Which part of the eye has cells that change light energy to nerve impulses?
A.iris
B.blind spot
C.lens
D.retina
D
Good job!
for 5 it is A
no # 5 is D. Retina: an upside down image falls on the retina, where cells change light energy to electrical and chemical energy in the form of nerve impulses. Harcourt Science 2000 publication pg F78
To answer questions like these, you can follow a specific method:
1. What is refraction?
To understand what refraction is, you can break it down into two parts: "What is light?" and "What happens when light passes through matter?" Start by learning about light, its properties, and how it travels. Then, delve into the concept of refraction, which is the bending of light as it passes from one medium to another. You can learn about the laws of refraction, how the angle of incidence and the refractive index affect the bending of light, and explore practical examples of refraction in everyday life.
2. What type of lens would you use to magnify your view of a butterfly?
To answer this question, you should first understand the basic types of lenses: concave lenses and convex lenses. Concave lenses are thinner at the center and thicker at the edges. They cause light waves to diverge, resulting in a smaller, virtual image. On the other hand, convex lenses are thicker at the center and thinner at the edges. They cause light waves to converge, leading to a magnified, real image. Applying this knowledge to the question, you should choose a convex lens to magnify your view of a butterfly.
3. What is a sound wave?
To answer this question, begin by understanding the properties of waves in general. Learn about amplitude, frequency, wavelength, and speed. Then, specifically study sound waves - how they are created by vibrations, how they propagate through different mediums such as air or water, and the characteristics that allow humans and animals to perceive sound.
4. If a bright, loud explosion took place in space, would it be seen or heard on Earth?
To answer this question, you need to grasp the basic differences between light waves and sound waves. Light waves can travel through the vacuum of space, reaching Earth without any obstacles. However, sound waves require a medium (e.g., air, water) to propagate. In the vacuum of space, there is no medium for sound waves to travel through, so the explosion would not be heard on Earth. However, if there were any visual cues, such as debris or light emissions, they would be visible.
5. Which part of the eye has cells that convert light energy to nerve impulses?
To answer this question, you need to have knowledge of the basic structure of the eye. The retina, which is located at the back of the eye, contains specialized cells called photoreceptors. These photoreceptor cells, specifically the rods and cones, convert light energy into nerve impulses that can be sent to the brain for further processing. Through this understanding, you can identify that the retina is the part of the eye responsible for converting light energy into nerve impulses.