Year 7 Mid Semester Science Quiz- Ms Janice Leung

What do the arrows in a food web represent?

• Energy transfer

• Relationship

• Movement

• Energy lost

Tags

NGSS.MS-LS2-3

Magnesium + ​ (a)   acid --> magnesium chloride + hydrogen

• hydrochloric
• sulfuric
• nitric
• citric

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

How to test for hydrogen gas?

• squeaky pop test

• lime water turns milky

• glowing splint relights

• fire dies out

When a metal reacts with an acid, what is the gas formed?

• hydrogen

• carbon dioxide

• oxygen

• methane

How are fold mountains formed?

• plates moving into each other

• plates moving apart

• plates sliding pass each other

which of these will be best at reflecting sound?

• fabric

• grass

• flat wall

• sponge

Tags

NGSS.MS-PS4-2

What is the name for a reflected sound wave?

• sound

• echo

• vibration

• note

Tags

NGSS.MS-PS4-2

Sound does not travel through a ​ (a)   because there are no ​ (b)  

• vacuum
• particles.
• tunnel
• reflection
• atoms
• molecules
• vibration

Tags

NGSS.MS-PS4-2

Match the parts of the Earth with the different materials

• The metals iron and nickel

• Mantle

• solid iron and nickel

• Inner Core

• molten rock and metal

• Outer Core

• solid rock

• Crust

What is the name given to organisms that feed by decaying organic matter?

• decomposers

• microorganisms

• bacterium

• virus