Success Homeschool

Year 7 Science · Science helps communities

Name: ______________________

Date: ____________

1. Which day would have the highest fire danger rating?
- ☐ (a) Cool, humid and still
- ☐ (b) Hot, dry and windy
- ☐ (c) Cold and rainy
- ☐ (d) Mild with green, wet grass
2. Which tool lets scientists photograph clouds and storms from space?
- ☐ (a) A rain gauge
- ☐ (b) A thermometer
- ☐ (c) A satellite
- ☐ (d) A seismometer
3. What does a cyclone WARNING mean, compared with a cyclone watch?
- ☐ (a) The cyclone is expected to affect the area soon, so people should act now
- ☐ (b) The cyclone has already finished
- ☐ (c) There is no chance of a cyclone
- ☐ (d) It is just a practice drill
4. A meteorologist is a scientist who studies…
- ☐ (a) Meteorites
- ☐ (b) Rocks
- ☐ (c) Earthquakes
- ☐ (d) The weather
5. Scientists cannot predict exactly when an earthquake will happen. How do they still help keep communities safe?
- ☐ (a) By stopping tectonic plates from moving
- ☐ (b) By mapping risky areas so buildings there can be made stronger
- ☐ (c) By making earthquakes happen at night
- ☐ (d) They cannot help at all
6. A river gauge reads 1.8 m, then 2.3 m, then 2.8 m, one hour apart. If it keeps rising by the same amount, what will the next reading be (in metres)?
7. A scientist who studies earthquakes is called a s____________.
8. Name one weather condition scientists use to work out a fire danger rating.

Answer sheet

1. Hot, dry and windy — Heat, dry air, strong winds and dry plants all make fires start easily and spread fast.
2. A satellite — Satellites orbit Earth and photograph clouds, storms and smoke from fires.
3. The cyclone is expected to affect the area soon, so people should act now — A watch means get ready; a warning means the danger is expected soon, so act now.
4. The weather — Despite the name, meteorologists study the weather, not meteors.
5. By mapping risky areas so buildings there can be made stronger — Hazard maps and strong building rules save lives, and ocean sensors help send tsunami warnings.
6. 3.3 m — It rises 0.5 m each hour, so 2.8 + 0.5 = 3.3 m.
7. seismologist — Seismologists study earthquakes and the waves they send through Earth.
8. Wind speed (also accepted: temperature, humidity, or how dry the plants are) — Fire danger depends on temperature, humidity, wind speed and how dry the vegetation (fuel) is.