Forces That Act at a Distance
Magnetism and gravity, and how forces can push or pull without touching.
9 questions, free, marked as you go with a worked explanation on every one.
What this covers
- contact and distance forces
The questions
- Which force pulls a dropped ball down towards the ground?
- Which materials are attracted to a magnet? Select all that apply.
- Two magnets are pushed together and they push apart instead of sticking. What does this tell you?
- How can you tell that magnetism acts at a distance?
- A ball rolls across the floor and slowly stops. Which force slowed it down?
- Which of these is a contact force rather than a force acting at a distance?
- A compass needle is sealed inside its case, yet wherever the compass is carried it swings around and settles pointing north. What does this show?
- A student tests a magnet by seeing how many paper clips it can hold through sheets of paper. With no paper it holds 12 clips, and each extra sheet placed between the magnet and the clips reduces the number it holds by 3. How many clips can it hold through 3 sheets?
- Use the table. A student holds paperclips at different distances from a magnet. What happens to the magnet's pull as the distance grows?