4th grade Science vocabulary

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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