physics

Sound wave travel by making particles vibrate. Sound will travel through anything that has particles :

• Solid

• Liquid

• Vacuum

• Gas

there are a total of seven major tectonic plates that cover nearly 95% of the earth's surface are :

• North America

• India

• Europe

• Antartica

which part of the Earth made of solid rock?

• mantle

• outer core

• crust

• inner core

which part of the Earth made of molten rock (hot liquid) and metal?

• crust

• inner core

• outer core

• mantle

the non-metal in the most common element in Earth's crust

• iron, calcium

• oxygen, silicon

• calcium, aluminium

• silicon, iron

What causes the tectonic plates to move?

• The tectonic plates move on the crust

• The tectonic plates move on liquid magma

• The tectonic plates moven on the water

the difference between mountain and volcano?

1. Mountain do erupt

2. Volcano have craters or lava/gas vents

3. Mountain are tall

4. Volcanoes do not erupt

• 2,3

• 1,4

• 1,2

• 2,4

can lunar eclipse be seen during daytime?

• yes, As the Moon passes between the Sun and the Earth, the Moon begins to block out some of the Sun's light casting a shadow on the Earth

• no, During an eclipse the sun and the moon are pretty much exactly opposite. Lunar eclipse occur on a full moon night

Which of these describes how a solar eclipse happens?

• The Sun comes between the Moon and the Earth

• The Moon comes between the Earth and the Sun

• The Earth comes between the Moon and the Sun.

Which of these describes how a lunar eclipse happens?

• The Earth comes between the Moon and the Sun

• The Sun comes between the Moon and the Earth

• The Earth comes between the Earth and the Sun