Year 7 Science · Unit 3 · Lesson 14
Foundation Worksheet
Learning Goals
Odd one out
Circle the item that does not belong in each group. Then explain why it doesn't fit in the answer column.
| # | Group | Your answer (odd one + reason) |
|---|---|---|
| 1 | Metal spoon in hot soup Copper pipe carrying heat Sea breeze off Port Phillip Bay Steel fence post hot in the sun | |
| 2 | Sunlight warming your skin Infrared heater in a bathroom Boiling water rising in a pot Heat from a campfire felt across the room | |
| 3 | Hot air rising from a radiator Sea breeze on a summer day Water circulating in a solar hot water system A wooden spoon conducting heat slowly |
Fill the gap
Choose the correct word from the word bank to complete each sentence. Two words will not be used.
Thermal energy (also called ) flows naturally from hot objects to cold objects until they reach the same . Temperature is a measure of the average kinetic energy of the inside a substance. When a metal saucepan is placed on a stove, energy is passed from particle to particle through the metal — this is called . In a boiling pot of water, hot water rises and cool water sinks, creating a current — this method of energy is called . The Sun warms the Earth's surface through , which can travel through the vacuum of space as electromagnetic waves.
1. A swimming pool at 25°C contains far more thermal energy than a cup of tea at 80°C. Explain why, using the words particles, temperature, and thermal energy.
2. During a bushfire in the NSW Blue Mountains, radiant heat from the fire reached a house 200 metres away before the flames arrived. Which method of heat transfer was responsible? Explain why this method does not require the air between the fire and the house to be heated first.
Wrap Up
In one sentence, what was the main idea of this lesson?