HKISO W2

Most magnets are made of ___________

• Iron or paper

• Paper or steel

• Iron or steel

• Steel and rock

• Rock and paper

Which of these simple machines does this model present?

• Pulley

• Lever

• Screw

• Inclined plane

• Wedge

Which change is necessary for this circuit to work?

• Add a second light bulb

• Add a power supply

• Open the switch

• Replace the copper wire with aluminum wire

• Remove the switch

What temperature is needed for water to boiling?

• -100oC

• 80oC

• 90oC

• 50oC

• 100oC

Which organ of human below is not a part of ciculation system?

• Lungs

• Artery

• Capillary

• Heart

Which group of animals is mainly oviparous animal?

• Bear

• Snake

• Horse

• Cow

• Goat

Which group of animals do frog belong to?

• Amphibian

• Bird

• Mammal

• Reptile

• Fish

Which substance below is needed for all plant to breath?

• Soil

• Water

• Sunshine

• Oxygen

• Carbon dioxide

Which gas is required for burning?

• Oxygen

• Hydrogen

• Nitrogen

• Helium

• Carbonic

Which element is usually used is as lift gas for airships?

• Copper

• Calcium

• Nitrogen

• Oxygen

• Helium