Exam

Question 1

Conductivity

Answer 1

If electricity can flow through it

Question 2

Solubility

Answer 2

A substance can dissolve in a solvent

Question 3

Density

Answer 3

How tightly packed particles are

Question 4

Sublimation

Answer 4

Solid to a gas, gas to a solid ex frost

Question 5

Matter

Answer 5

Anything that takes up space and has a mass

Question 6

Brittle

Answer 6

Easily broken

Question 7

Lister

Answer 7

Shiny or dull

Question 8

Group 1 metals

Answer 8

Alkali

Question 9

Group 2 metals

Answer 9

Alkaline earth metals

Question 10

Group 3

Answer 10

Halogens ( most reactive)

Question 11

Group 4

Answer 11

Noble gasses (stable)

Question 12

Physical change

Answer 12

The substance stays the same.

Question 13

Physical change example

Answer 13

Melting, cutting, breaking, boiling, dissolving

Question 14

Chemical change

Answer 14

One or more new substances a formed

Question 15

Chemical change example

Answer 15

Cooking, tarnishing, burning, rotting

Question 16

Sustainability

Answer 16

The ability to maintain natural ecological balance

Question 17

Ecological niche

Answer 17

A role an organism plays in an ecosystem

Question 18

Extirpated

Answer 18

No longer exists in an area

Question 19

Intraspecific

Answer 19

Between members of the same species

Question 20

Interspecific

Answer 20

Occurs between different species

Question 21

Four spheres

Answer 21

Lithosphere - earth
Atmosphere - air
Biosphere -all ecosystems together
Hydrosphere - water

Question 22

Photosynthesis

Answer 22

Converts light energy into chemical energy

Question 23

Photosynthesis equation

Answer 23

Light energy+carbon dioxide+water=oxygen+sugar

Question 24

Cellular respiration

Answer 24

Gets energy by breaking sugar in food

Question 25

Cellular respiration equation

Answer 25

Oxygen+sugar=carbon dioxide+water+energy

Question 26

Carbon cycle

Answer 26

Movement of carbon between the 4 spheres

Question 27

Energy transfer rule

Answer 27

Only 10% of energy is passed on to a consumer

Question 28

Big bang theory

Answer 28

An event the happened billions of years ago when dense matter exploded outward sending dust, rock and gas everywhere

Question 29

Parts of the sun

Answer 29

Core
Radiation zone
Convection zone
Photosphere
Chromosphere
Corona

Question 30

What is the sun made up of

Answer 30

Hydrogen gas
Helium

Question 31

Solar flare

Answer 31

Eruption of electromagnetic radiation from the sun

Question 32

Rotation

Answer 32

Spinning on an axis that starches across the north and south poles

Question 33

Revolution

Answer 33

The earth revolving around the sun

Question 34

Seasons

Answer 34

The tilt of the earth and the revolution of it results in seasons

Question 35

Solar eclipse

Answer 35

The moon is between the sun and earth. Dangerous to the eye

Question 36

Lunar eclipse

Answer 36

The earth is between the sun and moon. Safe for the eye

Question 37

Conductor

Answer 37

Allows electrons to move freely

Question 38

Current electricity

Answer 38

Electricity that moves/flows

Question 39

Ammeter

Answer 39

Used to measure current in a circuit

Question 40

Parts of a circuit

Answer 40

Source of energy (battery)
Electrical load (light bulb)
Control device (switch)
Connectors (wire)

Question 41

Law of repulsion

Answer 41

Like charges repel from one another

Question 42

Law of attraction

Answer 42

Opposite charges attract one another

Question 43

Kinetic energy

Answer 43

Energy of motion

Question 44

Chemical energy

Answer 44

Energy stored in bonds of atoms and molecules

Question 45

Nuclear energy

Answer 45

Energy stored in the nucleus

Question 46

OHMS law example

Answer 46

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