End of chapter review
Mark Levesley Science Solutions for Exercise - End of chapter review
Simple step-by-step solutions to End of chapter review questions of Forces and their Effects from Cambridge Lower Secondary Science Stage 7 : Student's Book. Also get 3D topic explainers, cheat sheets, and unlimited doubts solving on EMBIBE.
Questions from End of chapter review with Hints & Solutions
Explain why most of a swimmer’s body will normally be under the water level.
Astronauts on a space mission travel from the Earth to the Moon. Describe the different sizes and directions of gravitational forces they experience when they are close to the Earth.
Astronauts on a space mission travel from the Earth to the Moon. Describe the different sizes and directions of gravitational forces they experience when they are halfway between Earth and the Moon.
Astronauts on a space mission travel from the Earth to the Moon. Describe the different sizes and directions of gravitational forces they experience when they are when they have landed on the Moon.
Astronauts on a space mission travel from the Earth to the Moon. Is there is any point on the journey when their measured weight would be zero? Explain where and why.
Explain how you feel your own weight, and why astronauts in a space station do not feel their weight even though they are still pulled by the Earth’s gravity.
Explain why the astronauts and the space station they are in do not fall to Earth but stay in orbit.
Newton’s First Law of Motion predicts that, when there is no force acting on it, an object moves with a steady speed in a straight line. Explain why it is difficult to show this in an experiment. What might you try?
