Earth and Space Worksheet - KS3 - Intermediate

Earth and Space worksheet for Key Stage 3 / Year 7-9 (Ages 11-14). Intermediate level science practice, aligned to the UK National Curriculum. Print-ready with answer key included.

Science•Key Stage 3 / Year 7-9 (Ages 11-14)•Earth and Spaceintermediate

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Exploring Earth and Space: Intermediate Science Activities

Key Stage 3 / Ages 11-14 / Intermediate Level

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Instructions: This worksheet explores key concepts in Earth and Space science. Engage with data analysis, problem-solving, and scientific inquiry to deepen your understanding of our planet and beyond. Each activity is designed to challenge your knowledge and encourage independent thinking.

Understanding the Solar System

Match each planet in our solar system to its correct description. Draw lines to connect the planet to its description. Ensure you understand the unique characteristics of each planet.

🌍 --- Third planet from the Sun, known for supporting life.

Phases of the Moon

Identify the phases of the Moon by filling in the blanks with the correct phase name. Use the word bank provided to complete the activity.

Word bank: New Moon, First Quarter, Full Moon, Last Quarter

1. The Moon is completely illuminated: ___

2. The Moon is not visible from Earth: ___

3. Half of the Moon is illuminated and increasing: ___

4. Half of the Moon is illuminated and decreasing: ___

Space Exploration Timeline

Order the following space exploration milestones chronologically. Write the correct sequence number next to each event.

1. First human on the Moon (1969)

2. Launch of Sputnik 1 (1957)

3. Mars Rover Curiosity lands on Mars (2012)

4. Hubble Space Telescope launched (1990)

Gravity and Weight

Calculate the weight of an object on different planets using the formula W = mg, where m is the mass (in kg) and g is the gravitational field strength (in N/kg). Use the given gravitational strengths for each planet.

Mass of object: 10 kg

1. Earth (g = 9.8 N/kg): Weight = ___ N

2. Moon (g = 1.6 N/kg): Weight = ___ N

3. Mars (g = 3.7 N/kg): Weight = ___ N

Analyzing Data: Earth's Atmosphere

Examine the data table about the composition of Earth's atmosphere. Answer the questions below based on the data provided.

Gas	Percentage	Nitrogen
78	Oxygen	21
Argon	0.93	Carbon Dioxide
0.04	Other Gases	0.03

1. Which gas is the most abundant?

2. What is the combined percentage of Argon and Carbon Dioxide?

3. How much more abundant is Nitrogen compared to Oxygen?

The Life Cycle of a Star

Describe the stages in the life cycle of a star like our Sun. Use the key terms provided to structure your answer. Write a paragraph explaining each stage.

Key terms: Nebula, Main Sequence, Red Giant, White Dwarf