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​Định luật khúc xạ giải thích hiện tượng gì khi một con cá xuất hiện gần mặt nước hơn?

Multiple Choice

Students often use a hand lens to make small objects appear larger. A hand lens makes objects appear larger because the lens-

• increases the light’s strength

• changes the color of the light

• bends light passing through it

• converts light energy to heat

Multiple Choice

What is the formula for the relative refractive index (n21)?

• n21 = n2/n1

• n21 = n1/n2

• n21 = c/v

• n21 = v/c

Multiple Choice

What phenomenon does the law of refraction explain in the context of a fish appearing closer to the surface of the water?

• Light bending

• Water density

• Fish behavior

• Surface tension

Multiple Choice

If light is traveling from air to water with an angle of INCIDENCE of 40 degrees, what is the angle of refraction? (n=1 air, n=1.33 water)

...How do you solve: (1)(sin40) = (1.33)(sinƟ)

• 48 degrees

• 2.07 degrees

• 11.9 degrees

• 28.9 degrees

Multiple Choice

Calculate the angle of refraction when a light ray passes from air into water at an angle of incidence of 30 degrees. The refractive index of air is 1 and that of water is 1.33.

• 15 degrees

• 22.5 degrees

• 30 degrees

• 45 degrees

Multiple Choice

Which explains why the fork looks different under water?

• light can't pass through the glass
• the wavelength of light lengthens
• the amount of light increases when going through water
• light is refracted at an angle

Multiple Choice

What are the key components of effective group activities according to the text?

• Participation

• Creativity

• Independence

• Collaboration

Fill in the Blanks

Scientists never stop asking

Open Ended

Name at least two applications of the phenomenon of light refraction in daily life or technology.

Multiple Choice

Khi một tia sáng truyền từ môi trường trong suốt này sang môi trường trong suốt khác và gặp mặt phẳng cách theo một góc tới không vuông góc, hiện tượng nào sau đây sẽ xảy ra?

• Tia sáng sẽ bị phản xạ hoàn toàn trở lại môi trường ban đầu.

• Tia sáng sẽ tiếp tục truyền thẳng mà không thay đổi phương truyền.

• Tia sáng sẽ bị bẻ cong (gãy khúc) tại mặt phẳng cách, thay đổi hướng truyền.

• Tia sáng sẽ biến mất khi chạm mặt phẳng cách.

Multiple Select

Based on your observations of the prism, select the true statements.

• When light travels through a prism, the light is separated by wavelength.

• Humans see the different wavelengths of visible light as different colors.

• The prism is being used to combine different colors of light.

• The light bends when it enters the prism and again when it leaves the prism.

Multiple Choice

What happens to light during total internal reflection?

• The angle of incidence is greater than the critical angle.

• The angle of reflection is the same as the critical angle.

• The angle of refraction is less than the critical angle.

• The angle of incidence is zero.

Multiple Choice

What is the purpose of conducting experiments to derive the law of refraction?

• To understand light behavior

• To measure angles

• To calculate speed

• To create new laws