Exam study deck

Question 1

Which is measured in ohms: resistance, current, circuit, voltage

Answer 1

Resistance

Question 2

Which is measured in amps: circuit, voltage, resistance, current

Answer 2

Current

Question 3

What does a voltmeter calculate

Answer 3

It calculates the voltage across the source/battery

Question 4

What does a Ammeter calculate

Answer 4

It calculates the current in a circuit

Question 5

What does a ohmmeter calculate

Answer 5

It calculates the resistance in a circuit

Question 6

A shorter wire has ——— resistance than a longer wire: less, more, the same

Answer 6

Less

Question 7

When you cool a substance down its resistance: gets larger, gets smaller, stays te same

Answer 7

Gets smaller

Question 8

When the thickness of a wire increases the resistance of a wire: increases, decreases, stays the same

Answer 8

Decreases

Question 9

When the resistance in a circuit decreases the current: increases, decreases, is unchanged

Answer 9

Increases

Question 10

If you increase the voltage of the source, and the resistance stays the same, what happens to the current: increases, decreases, stays the same

Answer 10

Increases

Question 11

If the source in a parallel circuit has a voltage of 1.5V and there are 3 bulbs what is the voltage across each lightbulb

Answer 11

The voltage would be 1.5 because each path in a parallel circuit gets the full voltage of the source.

Question 12

If 3 bulbs are in a parallel circuit with a current of 2A what is the current flowing through the battery

Answer 12

The current would be 6 because in a parallel circuit the current of the battery is divided between the bulbs so 2x3 would be 6

Question 13

If you 3 bulbs with 3V in a series circuit what would be the voltage of the battery

Answer 13

The voltage would be 9 because in a series circuit the voltage of the battery is evenly divided between the bulbs so 3x3 would be 9

Question 14

Would the current stay the same between the lightbulbs and the battery in a series circuit

Answer 14

Yes they would

Question 15

If a negatively charges rod makes contact with a neutral sphere what will happen

Answer 15

the electrons in the rod transfer to the neutral object to make the sphere negatively charged

Question 16

What is alternating current electricity

Answer 16

A type of electrical current where the direction of the flow of electrons switches back and forth instead of having one steady flow

Question 17

Why is static electricity more of a problem in the winter than in summer

Answer 17

Because there is less humidity in the winter and in the summer humid air picks up charge better

Question 18

How is lightening formed

Answer 18

Negative charges gather near the base of the cloud, while positive charge builds at the top of the cloud, this allows electric fields to form between the clouds and the ground.

Question 19

Niche def

Answer 19

The functions species serves in their ecosystem (Where they live, what they eat, what eats them, how it behaves)

Question 20

Abiotic def

Answer 20

Non-living components of an ecosystem

Question 21

Biotic def

Answer 21

Living components of an ecosystem

Question 22

Water soluble

Answer 22

Will dissolve in water and can be harmful to nervous system or organisms

Question 23

Fat soluble

Answer 23

Will dissolve in fatty tissue, stays in the body and will be passed on in the food chain

Question 24

Bioaccumulation def

Answer 24

An increase in the concentration levels of a pesticide within the body of an organism overtime

Question 25

Bio amplification/bio magnification

Answer 25

A species at a higher Trophic Level feeds on more than one organism below it, pesticide concentrations increase the higher up the food chain.

Question 26

What is photosynthesis

Answer 26

Water + sun energy + carbon dioxide(abiotic) —> sugar(carbon in biotic) + oxygen

Question 27

What is cellular respiration

Answer 27

Sugar(carbon in biotic) + oxygen —> water + carbon dioxide(abiotic) + cellular energy

Question 28

What 4 elements make up 95% of the body in most organisms

Answer 28

Carbon, hydrogen, oxygen, nitrogen

Question 29

What are biochemical cycles

Answer 29

Movement of mater through the biotic and abiotic environments, particles are continually consumed, rearranged, stores, and released.

Question 30

Explain the Water cycle

Answer 30

Liquid water evaporates into water Vapor, condenses to form clouds, and precipitates back to earth in the form of rain or snow, (Liquid water flows across land (runoff), into the ground (infiltration), through the ground (groundwater). Groundwater moves into plants (plant uptake) and evaporates from plants into the atmosphere (transpiration) ad the cycle repeats.

Question 31

Explain the carbon cycle

Answer 31

Carbon moves from the atmosphere to plants. Through the process of photosynthesis, carbon dioxide is piled from the air to make food for plant growth. Carbon moves from plants to animals through food chains. Carbon moves from pants and animas to soil, when organisms die their bodies, wood and leaves bring the carbon into the soil. Carbon moves from organisms when we breathe and plants and animals get id of carbon dioxide through respiration. Carbon moves from fossil fuels when they are burned. Carbon moves from the air into the oceans, they absorb some carbon and it is dissolved into the water. This cycle repeats.

Question 32

What are the three ecological pyramids

Answer 32

Energy, biomass, numbers

Question 33

What is the difference between element and compound

Answer 33

Element is composed of only one type of atom where as a compound has two or more different types of atoms bonded together to form molecules

Question 34

How can you use to periodic table to determine how many shells an atom has

Answer 34

By using the rows. Each row tells you the amount of shells the atom has

Question 35

All of the atoms in the same column have the same number of ____

Answer 35

Chemical and physical properties

Question 36

What do all the elements of on family have in common

Answer 36

They all have the same number of electrons or spaces in their outer shell

Question 37

What are the physical properties of metals

Answer 37

Metal, shiny, solid at room temp, malleable, good conductor of heat and electricity

Question 38

What are physical properties of a non-metal

Answer 38

No a metal, dull, brittle, most re gasses at room temp, poor conductors of heat and electricity

Question 39

What are métalloïdes

Answer 39

Elements that have physical and chemical properties of both a metal and non-metal

Question 40

3 examples of métalloïdes

Answer 40

Boron, silicon, arsenic

Question 41

What are métalloïdes commonly used for

Answer 41

To are semiconductors that are used in computer chips

Question 42

Emulsion def

Answer 42

A type of colloid where tiny drops of liquid are in another liquid

Question 43

Colloid def

Answer 43

Mixture where solids or drops of liquid are suspended but they do not settle out

Question 44

Quantitative properties

Answer 44

Characteristics that are measured

Question 45

Qualitative properties

Answer 45

Descriptions made without measurements

Question 46

Describe the atomic element of an element

Answer 46

The number of protons in the atoms nucleus

Question 47

Describe the atomic mass of a element

Answer 47

The number of neutrons plus t6he number of protons

Question 48

Unscramble this formula CaCO3

Answer 48

1 calcium 1 carbon 3 oxygen

Question 49

Fe2O3

Answer 49

2 iron 3 oxygen

Question 50

Compare protons and electrons

Answer 50

Proton: Positive charge, part of nucleus, heavy, mass is 1 Electron: Negative charge, orbits around nucleus, light, mass is 0

Question 51

What are some indicators that a chemical change has occurred

Answer 51

Colour change, production of odor, change of temp, something is burning

Question 52

Indicators of a physical change

Answer 52

Change of size or shape, reversible, change in state of matter, no new substance formed