Unit 6 - Science stuff

Unit 6 - Science stuff

Reading exercise

Multiple Choice

Why aren't birds on power lines electrocuted?

• Because the birds on power lines aren't touching the ground.

• Because the birds don't have muscles.

• Because the birds are very small.

• Because electricity doesn't affect animals with feathers.

Multiple Choice

Why are stars only visible at night?

• Because the stars move to other places during the day.

• Because the moon travels around the sky with them.

• Because the sun makes the sky bright and the stars can't be seen.

• Because the stars don't shine during the day.

Multiple Choice

Why doesn't a metal ship sink?

• Because the weight of the ship and the air inside is less than the weight of the water that would occupy the same space.

• Because the ships are built with material (like metal) that doesn't sink.

• Because the put flouting elements below the ships.

• Because they use special equipment to mandating the ship floating.

Multiple Choice

How does sunscreen work?

• The radiation is absorbed by ingredients that sunscreens have.

• The sunscreen helps the skin to look tanned.

• The sunscreen creates a protection line that doesn't allow the skin to get burnt.

• The sunscreens have chemicals that helps take take of the skin.

Multiple Choice

How is gas put into bottles of fizzy drinks?

• They first add the gas and then the liquid, so it doesn't scape.

• They use a machine to put the gas inside the bottle.

• They use special chemicals to add the gas after closing the bottle.

• Carbon dioxide is forced into the bottles and they are closed quickly.

Multiple Choice

How does the soft centre get into chocolates?

• The sugary centre is already melted before the insert it inside the chocolate.

• They use special tools to insert the soft centre to the chocolate.

• The chocolate is heated, but the temperature is not enough to melt the chocolate, only the sugary centre.

• The soft center is covered with the chocolate right before wrapping them.

Everyday mysteries

The science of our lives!

Multiple Choice

You are safe if you go up a ladder and touch a power line.

• True

• False

FALSE

The ladder is touching the ground and you are touching the ladder.

Multiple Choice

The soft centres of the chocolates start as hard centres.

• True

• False

Multiple Choice

The sun's rays contain titanium oxide and oxybezone.

• True

• False

FALSE

Titanium oxide and oxybezone are ingredients of the sunscreen.

Multiple Choice

Bubbles in your soft drinks contain carbon dioxide.

• True

• False

Multiple Choice

Metal ships float because the metal they are made of is lighter than water.

• True

• False

FALSE

Metal ships float because they are full of air and the combined weight of the ship and the air inside is less than the weight of the water that would occupy the same space.

Multiple Choice

We can't see the stars that are in the sky during the day because of the sunlight.

• True

• False