Force and Light

Statement 1: A flashlight is a natural source of light

Statement 2: Sun is a natural source of light

• Both statements are TRUE

• Both statements are FALSE

• First statement is TRUE, second statement is FALSE

• First statement is FALSE, Second Statement is TRUE

Statement 1: Refraction is the bending of a wave of light when it enters a medium like water.

Statement 2: Reflection happens when light bounces off an object.

• Both statements are TRUE

• Both statements are FALSE

• First statement is TRUE, second statement is FALSE

• First statement is FALSE, second statement is TRUE

Based on the table shown, you can infer that the ____.

• distance travelled increases as the mass increases.

• distance travelled decreases as the mass increases.

• force exerted increases as the mass increases.

• force exerted decreases as the mass increases.

How can you increase the distance travelled by the stone E?

• Increase the mass of the stone

• Exert more force when throwing it

• You cannot do anything to change the distance travelled.

• Exert lesser force when throwing it

Kelly tried skating on ice and on the road. She wanted to find out if she will be able to skate faster. Which among the statements do you think shows Kelly's conclusion?

• I can skate faster on ice because there is less friction

• I can skate faster on ice because there is more friction.

• I can skate faster on the road because there is more friction.

• I can skate fast on both ice and the road because they produce the same amount of friction.

It is winter in Bella’s country. She made sure that she attached snow chains on her car tires. What is the purpose of these tire snow chains?

• They add more friction so it will not be slippery when driving on snow.

• They make the car look fancier and more expensive.

• They make the car look stronger.

• They make the car go faster.

More friction is needed in these places except

• the bathroom.

• the ice skating rink.

• the stairs.

• the road.

Students bump into each other when they turn the corner in the hallway shown. They plan to place a mirror in the hall so that they can see one another before reaching the corner. Which part of the hallway they can place the mirror best?

• A

• B

• C

• D

Some students were watching the movement of a shadow. In the diagram shown, where is the sun?

• W

• X

• Y

• Z

Mark is able to see his image in the mirror because light rays

• are refracted as they hit the mirror and bend to form the image.

• are reflected back after they hit the mirror to create the image.

• are absorbed by the mirror so that the image can be seen.

• go straight through the mirror so that the image appears.