2nd Grade Science Words
WORDS
1.
2.
3.
4.
5.
6.
7.
8.
9.
**Life Cycle
**Developing
Birth
Reproducing
Death
Digest
**Egg
**Larva
**Pupa
10. **Chrysalis
11. **Adult
12. Compare
13. Contrast
14. **Characteristic
15. Insect
16.
**Metamorphosis
17. Change
18. Pollinate
19. Amphibian
20. Mammals
21. Nocturnal
22. **Habitat
23. Environment
24. Observe
25. Predict
26. Omnivore
27. Herbivore
28. Carnivore
29. Predator
30. Prey
31. Producer
32. Food web
33. Food chain
34. Ecosystems
DEFINITIONS
All the parts of a living thing’s life from birth to death.
To grow
The act of being born; the act of coming into life.
To make or cause to exist again.
To end life.
To break down food in the body.
A round or oval mass from which young animals hatch.
The stage early in an insect’s life when it looks like a worm.
A stage in the lifecycle of certain insects when the larva is changing into an adult.
The inactive stage in the development of a butterfly or moth during which the larva is
enclosed in a tough case from which a fully developed adult eventually emerges.
A fully grown person, animal or plant.
To examine how two or more people or things are alike and different.
A difference; unlikeness.
A special feature or quality.
An animal that has three body parts and six legs.
The series of stages in the development of some animals from their immature form into
adulthood.
To make different in some way.
To carry pollen and drop it on a flower.
An animal that lives both in water and on land.
Animals with fur or hair that feed milk to their young and whose babies are born alive.
Of or happening at night; active at night.
A place where an animal or plant naturally lives and grows.
All the living and nonliving things in a place.
To see or sense through careful attention.
To tell about something before it happens.
An animal that eats both animals and plants.
An animal that eats only plants.
An animal that eats only animals.
An animal that kills other animals and eats them for food.
An animal that is caught and eaten by another animal.
Plants are called producers because they produce their own food!
A model that shows all the possible feeding relationships between organisms living in an
ecosystem.
The order in which animals eat plants and other animals.
Plants, animals and nonliving things that make up an environment and have an effect on
each other.
Weather
35. Air
36. Push
37. Pull
38. Blow
39. **Air pressure
40. Force
The atmosphere that surrounds the earth.
To press against something in order to make it move away.
To tug forward or toward oneself.
To move or cause to move by means of a current of air.
The weight of the air as it presses on the surfaces of objects.
The energy, strength or power used against someone or something.
41. **Temperature
42. Wind speed
43. Wind direction
44. **Precipitation
45. Measure
46. Thermometer
47. Anemometer
48. Wind vane
49. Rain gauge
50. **Weather
51. **Water cycle
52. **Water vapor
53. Evaporate
54. Solar
55. Condensation
56. Collection
57. Cirrus
58. Cumulous
59. Stratus
60. Climate
61. Energy
62. Meteorologist
63. Pollution
64. Runoff
65. Humidity
The measure of how cold or how hot someone or something is.
How fast the wind is blowing.
The direction from which the wind is coming.
Water that falls to the earth as rain, snow, hail or sleet.
To find the size, weight, volume or amount of something.
A device used to measure temperature usually by the height of a liquid that expands or
contracts inside a slender glass tube.
A device used to measure wind speed.
A thin, flat moveable piece of wood or metal that points in the direction that the wind is
blowing.
A device used to measure rainfall.
The condition or activity of the atmosphere at any given time or place.
The way water moves from the air to the land and back to the air.
Water that has changed into gas.
To change from a solid or liquid into a gas; to disappear.
From or of the sun.
The change of a substance from a gas into a liquid through cooling.
Things gathered together.
A kind of cloud that is thin, feathery, and high in the sky.
A kind of cloud that looks like puffy white cotton.
A kind of cloud that is low and gray and stretches across the sky.
Weather that is typical for a certain place including temperature and amounts of rain or
wind.
A force having the power to make things move or work.
Someone who reports and forecasts weather conditions.
Waste that harms land, water, or air.
Rainfall not absorbed by soil.
Moisture in the air.
Sound
66. **Sound
67. **Vibration
68. **Frequency
69. **Pitch
70. **Loudness
71. Instrument
72. **Membrane
73. **Inner Ear
74. **Outer Ear
75. **Eardrum
Energy that you hear.
A rapid motion back and forth.
The rate of a repeating movement.
How high or low a sound is.
How loud or soft a sound is.
A device to make music.
A soft tissue inside the ear than helps you hear.
The inside part of the ear.
The outer part of the ear.
The membrane that separates the outer ear and the middle ear and vibrates when sound
waves strike it.
76. Vocal Cords
77. Echolocation
Membranes at the top of the windpipe that vibrate and make sounds when you talk.
Sound waves bouncing off objects to tell their location.
Matter
78. Solid
79. Liquid
80. Gas
81. Matter
82. Mass
The only form of matter that has a shape of its own.
A form of matter that does not have its own shape.
The only kind of matter that always fills the space inside a container.
What all things are made of.
The amount of matter an object has.
83. **States of
matter
84. Melting
85. Freezing
86. **Evaporation
87. Vapor
88. Heating
89. Transfer
90. Boiling point
91. Freezing point
92. **Properties
93. **Combine
94. **Separate
95. Reverse
96. **Mixture
This can be a liquid, gas, or solid.
To change from a solid to a liquid by means of heat.
To make a liquid into ice by hardening with cold.
The process of water turning into gas.
Very small bits of something in the air, especially water.
To make or become hot.
To cause something to move from one place to another.
The point at which water begins to bubble. (212 degrees)
The point at which water turns from a liquid to a solid. (32 degrees)
A quality of something.
To mix or join together.
To take apart.
To move something so its position is the opposite of what it had been or inside out.
Something made up of two or more things.