Gravity in Space
Grade 5 · Science · Space Science · Alberta, Canada
Lesson Summary
Understand how gravity affects objects in space and keeps planets in orbit.
Explanation
Gravity is the force that pulls objects toward each other. The more mass an object has, the stronger its gravity. The sun has the most mass in our solar system, so its gravity is what keeps all the planets in orbit. Gravity also keeps the Moon orbiting Earth and keeps us on the ground. In space, astronauts feel weightless because they and their spacecraft are falling around Earth together, not because there is no gravity.
Practice Questions
Q1: Why do planets orbit the sun instead of floating away?
Answer: The sun's gravity pulls on the planets and keeps them moving in curved paths around it.
Q2: Why do astronauts float inside the space station?
Answer: They and the station are both falling around Earth at the same speed, which makes them feel weightless. Gravity is still there but they are in freefall.
Q3: Does a bigger object have more or less gravity than a smaller object?
Answer: More gravity. The greater an object's mass, the stronger its gravitational pull.
People Also Ask
What is Gravity in Space in Grade 5 Science?+
Gravity in Space is a lesson in the Space Science chapter of Grade 5 Science. It is part of the Alberta, Canada school curriculum and covers key concepts that students need to understand at this level.
What grade level covers Gravity in Space?+
Gravity in Space is taught in Grade 5 as part of the Science curriculum in Alberta, Canada.
How can I help my child with Space Science in Science?+
Start with the lesson summary and explanation on this page. Practice the questions provided, then use TutorTom for personalized, step-by-step help with Space Science topics.