What Are Some Heat Sources?

Mali places a bowl of hot soup on a table. In which direction will heat flow right away when she puts the spoon into the soup?

• from the air to the spoon

• from the spoon to the air

• from the soup to the spoon

• from the spoon to the soup

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

Elise is standing at the bus stop on a cold day. Which would most likely make her feel warmer?

• standing very still

• rubbing her hands together

• staying far from others

• putting her backpack on the ground

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

On a summer day, Tyrus goes for a ride on his bike. Parts of the bike are hot. Which way does heat move to make the bike parts hot?

• from the sun to Tyrus

• from Tyrus to the bike parts

• from the bike parts to Tyrus

• from the sun to the bike parts

When Liang gets home from school, she puts her lunchbox on the counter. She turns on her desk lamp and gets a pencil to do her homework. Which object produces the most heat?

• desk

• counter

• lamp

• lunchbox

Malik uses the brakes to slow his bike. What happens when the brakes rub against the tire’s rim?

• The rim gets hotter.

• The tires get heavier.

• The bike moves faster.

• The bike becomes lighter.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5