Basic Science Concepts and Energy Transfer – JS 1 Fill-in-the-Blank Questions
BASIC SCIENCE JSI
la. Study the following objects and classify them according to their state of matter: Table, chair, cup, diesel
oil, oxygen, glass, plastic, tyre, petrol, methane gas
b. State four differences between plants and animals. 2a. State five differences between metals and non-metals
b. State three uses of metals and three uses of nonmetals. Support your answers with examples
- Classify the following into artificial or natural source of energy: (1) Sun (ii) Wind (iii) Petrol (iv) uranium element (v) battery (vi) food
-
Explain the energy transfer involved in
(a) Striking a matchstick
(b) Pressing clothes with a pressing iron
(c) Pressing an electric doorbell
(d) Kicking a ball
BASIC SCIENCE JS1
1a. Classify Objects According to Their State of Matter:
- Solid: Table, chair, cup, glass, plastic, tyre.
- Liquid: Diesel oil, petrol, methane gas.
- Gas: Oxygen.
1b. Differences Between Plants and Animals:
- a) Cell Structure: Plants have cell walls, while animals do not.
- b) Mode of Nutrition: Plants are autotrophic, producing their own food through photosynthesis, while animals are heterotrophic, relying on external sources for nutrition.
- c) Locomotion: Most plants are fixed, whereas animals exhibit various forms of locomotion.
- d) Reproduction: Plants often reproduce through seeds, while animals can reproduce through various methods like giving birth or laying eggs.
2a. Differences Between Metals and Non-Metals:
- a) Conductivity: Metals are good conductors of heat and electricity; non-metals are poor conductors.
- b) State at Room Temperature: Most metals are solid; non-metals can be solid, liquid, or gas.
- c) Malleability and Ductility: Metals are malleable and ductile, while non-metals are generally brittle.
- d) Lustre: Metals are generally shiny, while non-metals lack a metallic shine.
2b. Uses of Metals and Nonmetals:
- Metals:
- a) Iron is used in construction for buildings and bridges.
- b) Copper is used in electrical wiring.
- c) Aluminium is used in making aircraft and packaging materials.
- Nonmetals:
- a) Hydrogen is used as a fuel for rockets.
- b) Oxygen is essential for respiration.
- c) Carbon is used in making pencils and as a fuel in the form of coal.
3. Classification of Energy Sources:
- Natural Sources: Sun, wind, uranium element.
- Artificial Sources: Petrol, battery, food.
4. Energy Transfer Explanation:
- (a) Striking a matchstick: Chemical energy in the matchstick is converted to thermal energy due to friction, resulting in the match igniting.
- (b) Pressing clothes with a pressing iron: Electrical energy from the iron is converted to thermal energy, which presses the clothes.
- (c) Pressing an electric doorbell: Electrical energy is converted to sound energy when the doorbell is pressed.
- (d) Kicking a ball: Kinetic energy from the kicker’s leg is transferred to the ball, causing it to move.
- Table is classified as a __________ state of matter.
- a) Solid
- b) Liquid
- c) Gas
- d) Plasma
- Oxygen is in a __________ state of matter.
- a) Solid
- b) Liquid
- c) Gas
- d) Plasma
- Metals are generally good conductors of __________ and __________.
- a) Heat, Sound
- b) Electricity, Heat
- c) Sound, Light
- d) Electricity, Light
- Plants reproduce through the formation of __________.
- a) Spores
- b) Seeds
- c) Eggs
- d) Larvae
- Non-metals are generally __________ at room temperature.
- a) Solid
- b) Liquid
- c) Gas
- d) Plasma
- Hydrogen is used as a fuel for __________.
- a) Cars
- b) Rockets
- c) Bicycles
- d) Airplanes
- Wind is classified as a __________ source of energy.
- a) Natural
- b) Artificial
- c) Both
- d) None
- Uranium element is a __________ source of energy.
- a) Natural
- b) Artificial
- c) Both
- d) None
- Iron is used in construction for buildings and __________.
- a) Roads
- b) Cars
- c) Bridges
- d) Tunnels
- Copper is used in __________.
- a) Cooking
- b) Electrical wiring
- c) Construction
- d) Transportation
- In the classification of matter, petrol is considered a __________ source of energy.
- a) Natural
- b) Artificial
- c) Both
- d) None
- In energy transfer, pressing an electric doorbell converts electrical energy to __________ energy.
- a) Kinetic
- b) Potential
- c) Sound
- d) Light
- Malleability and ductility are properties associated with __________.
- a) Metals
- b) Non-metals
- c) Gases
- d) Liquids
- Plastic is classified as a __________ state of matter.
- a) Solid
- b) Liquid
- c) Gas
- d) Plasma
- Aluminium is used in making __________ and packaging materials.
- a) Cars
- b) Aircraft
- c) Bicycles
- d) Ships
