Science g10 2nd quarter reviewer

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Questions and Answers

Which of the following effects is associated with ultraviolet (UV) light exposure?

Reduction in the growth rate of photosynthesis (correct)

Eye damage

Skin burns

Greenhouse effect involvement

What is a characteristic of a concave mirror?

It diverges light

The reflective surface bulges away from the light source (correct)

It forms only real images

The reflective surface bulges towards the light source

What describes the process of reflection?

Breaking down of light rays

Bouncing off of light rays (correct)

Transmission through a medium

Absorption of light rays

Which type of image is formed by a concave lens?

Virtual and upright Signup and view all the answers

What is the formula used to determine the number of images formed by two mirrors?

$N = rac{360}{ ext{angle between the mirror}} - 1$ Signup and view all the answers

Which of the following is a common effect of prolonged exposure to infrared radiation?

Eye damage Signup and view all the answers

What is the main characteristic of a convex lens?

Thinner at the edges and thicker at the center Signup and view all the answers

Which type of radiation is known for its potential to kill living cells?

Gamma rays Signup and view all the answers

What is electromagnetic induction primarily associated with?

The relationship between electricity and magnetism Signup and view all the answers

Which materials are considered ferromagnetic?

Iron, Cobalt, Nickel Signup and view all the answers

What happens to a non-magnetic current-carrying wire in a strong magnetic field?

It experiences a magnetic force causing movement Signup and view all the answers

Which statement about the electromagnetic spectrum is true?

Radio waves have the longest wavelength Signup and view all the answers

Who predicted the existence of electromagnetic waves in 1862?

James Clerk Maxwell Signup and view all the answers

Which of the following is a characteristic of non-ionizing radiation?

Includes radio waves and microwaves Signup and view all the answers

What was demonstrated by Michael Faraday's Induction Ring Experiment in 1831?

Changing magnetic fields can produce electric current Signup and view all the answers

What is a key property of magnets?

They can attract or repel other magnets Signup and view all the answers

Which of the following applications is NOT associated with microwaves?

Remote control systems Signup and view all the answers

What is the primary property of visible light?

Electromagnetic waves detectable by the naked eye Signup and view all the answers

Which type of radiation is primarily used in medical imaging for detecting skeletal abnormalities?

X-rays Signup and view all the answers

Which of the following types of radiation stimulates vitamin D production in the human body?

Ultraviolet radiation Signup and view all the answers

Which application is directly associated with the use of infrared radiation?

Thermometers Signup and view all the answers

Which of the following radiation types is discovered by John Wilhelm Ritter?

Ultraviolet radiation Signup and view all the answers

What is the range of frequencies classified as microwaves?

300 MHz to 300 GHz Signup and view all the answers

Which effect of visible light is related to its interaction with biological organisms?

Powers the photosynthetic cycle of a plant Signup and view all the answers

Study Notes

Effects of Infrared Radiation

Exposure to infrared radiation for long periods may experience eye damage
Can damage skin and tissues
Involved in the greenhouse effect
Elevated temperatures and changes in weather

Effects of Ultraviolet Light (UV)

Overexposure may cause skin cancer
Damage of the immune system
Suppression of eye
Harmful UV rays cause reduction in the growth rate of photosynthesis

Effects of X-Ray

The radiation from x-rays can harm living cells
Cataracts in the eyes
Skin burns

Effects of Gamma Rays

Can kill living cells
May develop mild case of radiation poisoning
Risk of cancer

Module 3: Mirrors and Lenses

Reflection

Reflection - bouncing off of light rays
Rays of light:
- Incident Ray - ray of light approaching the mirror
- Reflected Ray - ray of light which leaves the mirror
- Normal line - ray strikes the mirror
Multiple Images
- The number of images, N, can be determined using the formula N = (360/angle between the mirror) - 1

Types of Reflection

Specular/Regular - on smooth surfaces
Diffused/Irregular - on rough surfaces

Spherical Mirrors / Curved Mirror

Spherical mirrors / Curved mirror - is a reflecting surface in which its surface is a section of sphere
Concave Mirror - converging mirror; reflective surface bulges away from the light source
Convex Mirror - diverging mirror; reflective surface bulges towards the light source

Center of curvature (c)

Center of curvature (c) - center of sphere

Radius (r)

Radius (r) - distance from the mirror

Vertex (v)

Vertex (v) - center of the mirror

Focal point/ focus (f)

Focal point/ focus (f) - point between the center of c and v

Lens

Lens - transparent material made of glass or plastic

Types of lenses

Convex lens - thicker (center), thinner (edges); forms real and virtual
Concave lens - thicker (edges), thinner (center); upright and reduced images

Real Images

Real images - images formed on screen after reflection

Virtual Images

Virtual images - formed by intersection of non-real rays

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Description

Explore the impacts of various types of radiation, including infrared, ultraviolet, x-ray, and gamma rays, on living organisms and the environment. Additionally, delve into the principles of reflection in optics, including key terms and image formation. This quiz will enhance your understanding of both radiation effects and the behavior of light.