Science

Question 1

force

Answer 1

a push or pull

Question 2

energy

Answer 2

the ability to work, cause of change in position

Question 3

Physical changes in matter

Answer 3

evaporation • melting • freezing • cutting, as in cutting down a tree or cutting your hair) • breaking

Question 4

Chemical Changes

Answer 4

• burning • decomposition • cooking • photosynthesis - when carbon dioxide and water are changed into sugars by plants) • rustin

Question 5

force

Answer 5

a push or a pull

Question 6

energy

Answer 6

the ability to do work, cause a change in position

Question 7

types of energy

Answer 7

light, thermal, sound, electrical, mechanical

Question 8

repel

Answer 8

a pushing force

Question 9

attract

Answer 9

a pulling force

Question 10

conductor

Answer 10

a substance/material that allows thermal or electrical energy to flow

Question 11

insulator

Answer 11

a substance that blocks the flow of thermal or electrical energy

Question 12

circuit

Answer 12

a path through which electrical energy flows

Question 13

friction

Answer 13

the resistance that on surface encounters when moving over another surface. Generates heat energy.

Question 14

gravity

Answer 14

a force by which a planet or other body pulls objects towards its center.

Question 15

motion

Answer 15

a change in position, the way something moves

Question 16

acceleration

Answer 16

a change in speed or direction

Question 17

speed

Answer 17

distance traveled over time and calculated as s=d/t. (This represents the average speed

Question 18

velocity

Answer 18

speed with a direction. Ex: the car was traveling 50kmh west

Question 19

displacement

Answer 19

the actual distance between two points. It may not be the distance traveled.

Question 20

inertia

Answer 20

the tendency of a object to remain at rest, or to stay in motion, until it is acted upon by a force. (Newton’s 1st Law of motion) Inertia is a property of matter.

Question 21

Newton’s 2nd Law of motion

Answer 21

for every action, there is an opposite and equal reaction.

Question 22

Newton’s 3rd Law of motion

Answer 22

the force applied to an object is the product of its mass and acceleration. (F=ma)

Question 23

newtons

Answer 23

the unit measure for force

Question 24

m/s2

Answer 24

the unit measure for acceleration

Question 25

m/s

Answer 25

the unit measure for speed

Question 26

ecology

Answer 26

the study of how living things interact with one another and their environment

Question 27

ecosystem

Answer 27

all the living and nonliving things in an area and their interactions.

Question 28

abiotic

Answer 28

the part of the ecosystem that is not alive and has never been alive (i.e., rocks, water, air, temperature, weather, etc)

Question 29

biotic

Answer 29

the parts of the ecosystem that are alive or were alive at one point. Dead organisms are biotic because they were once living.

Question 30

adaptation

Answer 30

a characteristic that helps an organism survive and reproduce in a specific environment.

Question 31

biome

Answer 31

a plant and animal community that covers a large part of the Earth and is identified by specific climate i.e., desert, tropical, tundra, deciduous forest, aquatic, etc.

Question 32

community

Answer 32

all the organisms living together in a specific area. Ex: all the organisms living in a pond.

Question 33

population

Answer 33

all the organisms of the same species living in a specific area. Ex: all the elodea plant living in a pond.)

Question 34

producers

Answer 34

organisms that make their own food. All plants are producers.

Question 35

consumers

Answer 35

organisms that eat other organisms

Question 36

secondary consumers eat primary consumers

Answer 36

birds eat insects

Question 37

tertiary consumers

Answer 37

hawks eat rabbits

Question 38

top/apex predator

Answer 38

a consumer that does not have a natural predator

Question 39

carnivores

Answer 39

consumers that eat meat.

Question 40

herbivores

Answer 40

consumers that eat plants are primary consumers.)

Question 41

omnivores

Answer 41

consumers that eat both plans and animals

Question 42

decomposers

Answer 42

organisms that break down dead organisms and recycle nutrients into the ecosystem. Ex: (fungus, certain types of bacteria)

Question 43

niche

Answer 43

the function, or job, of a specific organism in its environment.

Question 44

trophic/trophism

Answer 44

to do with eating, or how an organism gets energy. Troph- is derived from the Greek word trophe, meaning nourishment.

Question 45

heterotroph

Answer 45

an organisms that depends on other organisms for food/energy. All consumers are heterotrophs.

Question 46

autotroph

Answer 46

an organism that makes its own food/energy through chemical processes. All producers are autotrophs