What makes an object stop or slow down?

Friction is present in our everyday lives. Which of the following situations involves friction?

Which of the following increases friction?

Which of the following surfaces has the least amount of friction?

What type of friction occurs when an object is not moving?

A book on top of the table shows static friction. What do you think is static friction?

What causes objects to fall down to the ground?

Gravity attracts all physical bodies. Which of the following statements is TRUE about gravity?

Gravity depends on the mass of an object. Which of the following would be most difficult to lift against gravity?

What is the effect of the Earth’s gravity on us?

You are listening to your favorite music in your cellphone. Which form of energy is present?

Sun is the main source of energy on Earth. The energy transfers in space through radiation. What are the forms of energy present?

Our body is considered as a heat engine. Which situation uses heat energy in our body?

We put our food in a refrigerator to prevent spoilage. Which form of energy is needed for it to work?

When you touch your neck as you talk, you can feel the vibrations inside. What form of energy does it   have?

Simple machines are simple tools that are found around us. Which is the function of simple machines?

Wedge is an example of a simple machine. In which activity will you use wedge to lessen your work?

Imagine you are pushing a box up into a truck using a ramp. What word best describes the box?

Pulleys are useful in carrying heavy loads from one place to another. The following are the uses of pulleys EXCEPT?

Handling simple machines properly could prevent us from accidents. Which of the following does NOT show safety measures in using machines?