4th grade Science vocabulary

Define and/or use these words in sentences to show their meaning.  Click on "4th grade Science vocabulary" to go back to the vocabulary home page.  Click on "Chapters" to find the definitions.

Unit A

                                                              

Chapter 1

Lesson 1

  1. cell
  2. cytoplasm
  3. nucleus
  4. chloroplast

Lesson 2

  1. genus
  2. species

Lesson 4

  1. vertebrate

  2. invertebrate

                                                              

Chapter 2

Lesson 1

  1. photosynthesis
  2. chlorophyll

Lesson 3

  1. sepals
  2. pistil
  3. stamens
  4. ovary
  5. fertilization

Lesson 4

  1. dormant

                                                              

Chapter 3

Lesson 1

  1. ecosystem

  2. population

  3. community

  4. niche

Lesson 2

  1. herbivores

  2. carnivores

  3. omnivores

  4. decomposers

                                                              

Chapter  4

Lesson 2

  1. competition

  2. parasite

  3. host

Lesson 3

  1. succession

  2. extinct

  3. endangered

Lesson 4

  1. hazardous wastes

Chapter 5

Lesson 1

  1. voluntary muscles

  2. involuntary muscles

Lesson 3

  1. neuron

Lesson 4

  1. pathogens

  2. infectious disease

  3. immune system

  4. vaccine

 

Unit B

                                                              

Chapter 6

Lesson 2

  1. evaporation

  2. condensation

  3. precipitation

Lesson 3

  1. humidity

  2. front

Lesson 4

  1. meteorologist
  2. barometer
  3. anemometer
  4. wind vane

                                                              

Chapter 7

Lesson 1

  1. hurricane
  2. tropical depression
  3. tropical storm
  4. storm surge

Lesson 2

  1. tornado
  2. vortex

                                                              

Chapter 8

Lesson 1

  1. minerals
  2. luster

Lesson 2

  1. sediment
  2. sedimentary rock

Lesson 3

  1. igneous rock
  2. metamorphic rock

                                                              

Chapter 9

Lesson 1

  1. landforms
  2. weathering

Lesson 2

  1. erosion
  2. deposition
  3. landslide

Lesson 3

  1. volcano
  2. fault
  3. earthquake
  4. epicenter

Chapter 10

Lesson 1

  1. solar energy
  2. humus

Lesson 2

  1. solar cell
  2. ore
  3. fossil fuels
  4.  petroleum
  5. conservation
  6. recycling

Unit C

                                                              

Chapter  11

Lesson 2

  1. density

Lesson 3

  1. mixture
  2. solution
  3. solute
  4. solvent
  5. solubility

Lesson 4

  1. physical change
  2. chemical change

                                                              

Chapter 12

Lesson 1

  1. thermal energy

Lesson 2

  1. conduction
  2. conductor
  3. insulator
  4. convection current
  5. radiation

                                                              

Chapter 13

Lesson 1

  1. static electricity

Lesson 2

  1. electric current

  2. resistance

  3. series circuit

  4. parallel circuit

Lesson 3

  1. magnetism

  2. magnetic field

Lesson 4

  1. electromagnet

                                                              

Chapter 14

Lesson 1

  1. compression

  2. frequency

  3. wavelength

Lesson 2

  1. pitch

Lesson 4

  1. reflection
  2. absorption
  3. transparent
  4. translucent
  5. opaque
  6. refraction

Chapter 15

Lesson 1

  1. relative motion
  2. frame of reference
  3. speed
  4. velocity

Lesson 2

  1. force
  2. friction

Lesson 3

  1. gravity
  2. work
  3. kinetic energy
  4. potential energy

Chapter 16

Lesson 1

  1. lever
  2. fulcrum
  3. load
  4. effort
  5. wheel and axle
  6. pulley

Lesson 2

  1. inclined plane
  2. wedge
  3. screw

Unit D

                                                              

Chapter 17

Lesson 1

  1. axis

  2. rotation

  3. revolution

  4. orbit

  5. ellipse

Lesson 2

  1. eclipse

  2. lunar eclipse

  3. solar eclipse

  4. constellations

                                                              

Chapter 18

Lesson 1

  1. universe

  2. galaxy

  3. astronomy

  4. solar system

Lesson 2

  1. craters

  2. space probe

  3. satellites

Chapter 19

Lesson 1

  1. technology

  2. optical fibers

Lesson 2

  1. communication

  2. telecommunication

  3. vehicle