What key questions serve as the foundation for scientific exploration?

The key questions are 'Why?' and 'How?' which ignite curiosity and lead to deeper investigations.

Fill in the blanks: Scientific investigation involves asking focused questions, controlling ___, observing ___, and recording ___ to improve understanding.

Variables; results; observations

True or False: The immune system is responsible for creating diseases in the body.

False. The immune system defends the body against diseases.

Riddle: I am invisible but can help you digest food or make you sick. What am I?

Microbes

How does electricity demonstrate both heating and magnetic effects in everyday applications?

Electricity generates heat in devices like heaters and creates magnetic fields to run motors and machines.

Fill in the blanks: The phases of the Moon help humans keep track of ___ and create ___ for time measurement.

Days; calendars

Multiple Choice: Which of the following best describes the particulate nature of matter? A) Matter is not made of particles. B) All matter is made of large chunks. C) Solids have tightly packed particles while gases have freely moving particles. D) Liquids have fixed particles.

C) Solids have tightly packed particles while gases have freely moving particles.

What role do ecosystems play in supporting life on Earth?

Ecosystems consist of interconnected living organisms and their environments.

True or False: The only way to measure time is through mechanical clocks.

False. Time can also be measured by observing the movements of celestial bodies like the Sun and Moon.

Riddle: I can make things start, stop, speed up, or change direction. What am I?

Forces

Fill in the blanks: Cleanliness and ___ are key to preventing disease.

Vaccination

How do pressure differences lead to the formation of winds and storms?

Pressure differences create air movement, which can lead to breezes and, under extreme conditions, storms and cyclones.

What are the three classifications of matter and how do they differ?

Classifications of Matter Explained

• Elements are pure substances.

• Compounds are chemically bonded.

• Mixtures are physical blends.

What is the importance of careful observation in scientific investigation?

Careful observation helps ground scientific inquiry in facts, allowing investigators to build reliable conclusions from their findings.