International School of Minnesota
SABIS® School Network
Science
Level J / Grade 8
Term 3 End of Year Revision Guide
Level J Science
SABIS ® CELLS AND GENETICS / ISBN 41-14093-15
Ch.1 Cellular Nature of Life S1.1
Key terms: cell, homeostasis, multicellular, response, stimulus, unicellular
1. Define an organism and give several examples.
2. List three needs of organisms.
3. Name and describe six characteristics of living things.
4. Give examples of unicellular organisms and describe two of their
characteristics.
5. Explain how a multicellular organism’s body is organized.
6. Explain how the development of the microscope changed the study of
organisms.
7. Summarize the three parts of the cell theory.
SABIS® HEREDITY AND EVOLUTION / ISBN 41-14132-14
Ch1 Biological Evolution S1.1
Key terms: ancestor, biological evolution, fossil, scientific theory, species
1. Explain how the many species that exist today arose.
2. Summarize how evolution has led to the diversity of organisms.
3. Explain how Lamarck thought a new trait could be acquired by an
individual organism, and give an example.
4. Give examples of some of the things that Darwin collected, studied, and
observed.
5. Explain how Darwin realized that species could change.
6. Summarize Darwin’s hypothesis about the source of variation in a
species.
SABIS® WAVES, SOUND, AND LIGHT / ISBN 41-14134-14
Ch. 1 Waves S1.1
Key terms: Amplitude, body wave, compressional wave, electromagnetic
wave, longitudinal wave, mechanical wave, propagate, seismic wave, shear
wave, surface wave, transverse wave, wave
1. Identify and compare different types of waves.
2. Describe and compare the motion of matter in different types of waves.
3. Explain how energy is transmitted by a mechanical wave.
4. Describe how matter and energy are transmitted in a sound wave.
5. Explain how mechanical energy moves through Earth when rocks break.
6. Describe the motion of particles of water in a water wave.
Ch. 1 Waves S1.2
Key terms: compression, equilibrium position, frequency, oscillation, peak,
period, rarefaction, trough, wave speed, wave pulse, waveform, wavelength
1. Compare the waveforms of transverse, surface, and longitudinal waves.
2. Describe the relationship between the period and the frequency of a
wave.
3. Explain how to calculate or predict the speed of a wave.
4. Describe the relationship between the energy and amplitude of a
mechanical wave.
5. Create and interpret graphs of mechanical waves.
Ch. 1 Waves S1.3
Key terms: antidote, constructive interference, destructive interference,
diffraction, incident wave, interference, intermediate interference, law of
reflection, node, reflected wave, reflection, refraction, standing wave
1. Describe what happens when a wave hits a barrier.
2. Describe how the characteristics of a wave change when it moves from
one medium into another.
3. Describe how a wave changes when it goes around a barrier or through
a small opening.
4. Describe what happens when waves interact with each other.
5. Define standing waves and explain how they form.
Ch. 2 Sound S2.1
Key terms: attenuation, audible sound, infrasound, intensity, pitch, sound
wave, threshold of hearing, threshold of pain, ultrasound, vibration
1. Explain what causes sound.
2. Explain how humans detect sound waves.
3. Describe the relationship between frequency and pitch.
4. Identify the factors that influence the intensity of a sound.
5. Compare sound intensities using the bel scale.
6. Explain how sound waves “lose” energy.
Ch. 2 Sound S2.2
Key terms: Bulk modulus, density, Doppler effect, elasticity, fundamental
frequency, natural frequency, resonance
7. Identify factors that affect the speed of sound.
8. Describe how sound behaves when the medium it is moving through
changes.
9. Explain how we perceive interference of sound waves.
10. Identify and describe the properties of a standing wave.
11. Define and explain resonance.
12. Explain how different instruments produce different musical notes.
13. Explain why the frequency of a sound appears to change when objects
are moving.
Ch. 2 Sound S2.3
Key terms: echolocation, piezoelectric effect, seismic reflection, seismic
refraction, sonar, ultrasound
14. Explain how animals make use of sound reflection.
15. Explain how scientists use sonar to map the ocean floor.
16. Explain how sound waves can be used to image the human body.
17. Explain how sound waves can be used to explore Earth’s crust.
18. Explain how sound waves can be used to generate electricity.
19. Explain how a sound system works.
20. Explain how sound intensity can be reduced using soundproofing.
Ch. 3 Electromagnetic Waves S3.1
Key terms: electromagnetic radiation, electromagnetic spectrum,
electromagnetic wave, light, photoelectric effect, photon
1. Identify ways that electromagnetic radiation behaves as a wave.
2. Describe the waveform of an electromagnetic wave.
3. Explain how different types of electromagnetic radiation are classified.
4. Explain why light can be modeled as a particle.
5. Identify the factors that influence the amount of energy transmitted by an
electromagnetic wave.
6. Describe how the speed of light changes as it moves from one medium
into another.
7. Explain how electromagnetic waves form.
Ch. 3 Electromagnetic Waves S3.2
Key terms: extremely low frequency (ELF) waves, fluorescence, gamma
rays, infrared radiation, microwaves, radio waves, ultraviolet radiation, Xrays
1. Explain how different types of electromagnetic radiation are classified.
2. Describe how people use radio waves.
3. Describe how people use microwave radiation.
4. Explain the relationship between infrared radiation and thermal energy.
5. Explain how ultraviolet light affects living things.
6. Describe how X-rays are used in medicine.
7. Describe how gamma rays can be used.
Ch. 3 Electromagnetic Waves S3.3
Key terms: absorption, artificial light, color addition, color subtraction, full
spectrum light, natural light, opacity, opaque, pigment, primary colors of
light, primary colors of pigment, translucent, transmission, transparent,
visible light, visible light source, visible spectrum
1. Identify sources of natural and artificial light.
2. Describe the spectrum of visible light.
3. Explain why different objects appear different in the same light.
4. Explain how the visible properties of an object are related to how light
interacts with the object.
5. Explain why different things have different colors.
6. Describe how different colors of light can be added together to form the
range of colors that we see.
7. Explain what happens when different colored pigments are mixed
together.
Ch. 4 Optics and Light S4.1
Key terms: angle of incidence, angle of reflection, beam, concave mirror,
convex mirror, diffuse reflection, incident ray, plane mirror, ray, real image,
reflected ray, specular reflection, virtual image, wave front
extremely low frequency (ELF) waves, fluorescence, gamma rays, infrared
radiation, microwaves, radio waves, ultraviolet radiation, X-rays
1. Describe the relationship between a wave front and a ray.
2. Predict the direction that a light ray will travel after it reflects off a
surface.
3. Compare how smooth objects reflect light with how rough objects reflect
light.
4. Explain how an image forms when light reflects off a plane mirror.
5. Describe how an image forms when light reflects off a concave mirror.
6. Describe how light reflects off of convex mirrors.