EOY 9 2021 REVIEW

FOOD

100

In the food chain below, what is the source of the energy?

leaves-->beetle-->lizard-->bird

Sunlight

Light

200

In the food chain below, name the secondary consumer. 

leaves-->beetle-->lizard-->bird

Lizard

300

What name is given to the organism that makes its own food in the food chain or web? 

Producer

400

What name is given to a consumer that eats both plants and animals?

Omnivore

500

Use the following organisms to make a feasible food web with at least two overlapping arrows.

SMALL BIRD,  LIZARD,  BERRIES, LIZARD, BEETLE, BUTTERFLY, LEAVES

                             LARGE BIRD

            LIZARD                         SMALL BIRD

            BEETLE                             BUTTERFLY

                       LEAVES         BERRIES

FOOD 2

100

In the food chain below, which organism will receive the least amount of energy? 

leaves-->beetle-->lizard-->bird

bird

200

Other than the lizard numbers reducing, state TWO changes that may occur if the lizards died out of the food chain below? 

leaves-->beetle-->lizard-->bird

The birds would decrease

The beetles would Increase

The leaves would decrease

300

In the food chain below, which organism is on the second trophic level?

leaves-->beetle-->lizard-->bird

Beetle

400

What do the arrows in a food chain or web represent?

The flow of energy

500

Specify a predator-prey relationship from the food chain below.

leaves-->beetle-->lizard-->bird

Predator: Lizard   Prey: Beetle

Predator: Bird    Prey: Lizard

METALS 1

100

Metals are good ________ of electricity because they have a sea of constantly moving _________ to transport the electricity.

Conductor........electrons

200

Metals are ________ which means that they make a ringing sound when hit.  This is why they are used to make _______ in the orchestra.

Sonorous

Intruments

300

Metals are ________, which means that they will sink if placed in water.  Only three metals are _______ and can be used to find directions in instruments such as a ________.

Dense

Magnetic

Compass

400

Place these metals in the order of reactivity from most reactive to least reactive.

CALCIUM,  LITHIUM,  MAGNESIUM,  POTASSIUM

potassium

lithium

calcium

magnesium

500

Name an alloy and state the individual metals that make them up.

Brass- Copper and zinc

Bronze - Copper and tin

Solder - lead and tin

Duralumin - Aluminum and copper

Nitinol - nickel and titanium

METALS 2

100

Complete the following equation:

Zinc + Oxygen --> ______________

Zinc oxide

200

Complete the following equation:

Calcium + Water --> _________ + __________

Calcium hydroxide + Hydrogen

300

Complete the following equation:

Iron + Hydrochloric acid --> _________ + _________

Iron chloride + hydrogen

400

Complete the following equation:

Lithium + Nitric acid --> _________ + __________

Lithium nitrate

500

How would you test for the gas given off from the following reaction and what is the distinctive sound heard if it present?

Hold a lit split near the gas.

If present, a squeaky pop will be heard.

ELECTRICITY

100

Carl has radio that needs 5A of current to work and has a resistance of 1 ohm.  He wants to know the voltage needed to make the radio work.

What equation would he use to calculate this?

Voltage = Current x Resistance

V = I x R

200

An electric circuit has a voltage of 10V and a resistance of 2 ohms.  What current flows through it?

I = V / R

 = 10V / 2 ohms

 = 5A

300

An electric heater has a power rating of 10kW and is used for 2.5 hours.  How much energy did it use in kWh?

10kW x 2.5hrs =  25 kWh

400

What happens if an appliance needs a 5A fuse but is fitted with a 13A fuse instead?

Too much current would flow through the appliance which may catch on fire.

500

Sara used 120kWh or energy on her over the last month.  If each kWh of energy costs 10 cents, how much did her electricity bill come to?

120kWh x 10c  = $12