Science 9 Term-End Review

What is an example of structural adaptation in an organism?

• Migration patterns of birds

• Camouflage in chameleons

• Hunting behavior of wolves

• Photosynthesis in plants

What is the primary difference between physical and chemical changes?

• Physical changes are reversible, while chemical changes are not.

• Chemical changes create new substances, while physical changes do not.

• Physical changes involve heat, while chemical changes do not.

• Chemical changes happen more slowly than physical changes.

Which of the following is an example of a point source of pollution?

• Runoff from agricultural fields

• Sewage discharge from a pipe

• Air pollution from cars

• Soil erosion

Which of the following increases the resistance in a circuit?

• Using a thicker wire

• Decreasing the length of the wire

• Increasing the temperature of the wire

• Adding more batteries to the circuit

Which type of electromagnetic radiation is used to study distant stars?

• Gamma rays

• Infrared radiation

• Ultraviolet radiation

• Radio waves

Which of the following is an example of using scientific knowledge to solve real-world problems?

• Painting a house

• Developing renewable energy sources

• Writing a novel

• Playing a musical instrument

What is one key factor to consider when designing a sustainable ecosystem for a space mission?

• Availability of Wi-Fi

• Oxygen production

• Number of windows

• Size of the crew

Reflecting on scientific knowledge, which of the following is a real-world application?

• Cooking a meal

• Building a bridge

• Drawing a picture

• Reading a book

What is a likely environmental impact of a factory starting operation near a lake?

• Decrease in fish population

• Increase in bird species

• Decrease in algae growth

• Increase in water clarity

Which of the following is NOT a key factor in designing a sustainable ecosystem for space?

• Waste management

• Water recycling

• Entertainment options

• Food production