Unit 3 Science Earth and the Solar system

Earth and the other planets closest to the Sun are made mostly of _______

• gas
• metal
• water
• rock

Which is the largest object in our solar system?

• Sun
• Jupiter
• Earth
• Pluto

Which planet is closest to the sun?

• Uranus

• Mercury

• Neptune

• Earth

What is the only planet in our Solar System that life can survive on?

• Neptune

• Jupiter

• Earth

• Mars

What holds the planets in their orbits around the sun?

• gravity

• speed

• string

• air currents

How many days does it take the Earth to revolve around the Sun?

• 30 days

• 365 days

• 100 days

• 40 days

Which of the following is an accurate model of how the Sun, Earth, and Moon move?

• Sun and moon orbit Earth
• Earth and moon orbit Sun
• Earth orbit's the Sun and the moon orbits Earth
• Earth and sun orbit moon

What do shadows on Earth help show?

• Earth's rotation

• Earth's revolution

• Earth's equator

• Earth's axis

What changes the length of a shadow?

• the size of the sun

• the angle of the sun

• the heat of the sun

• the color of the sun

When the sun gets higher in the sky, shadows get ______.

• longer

• gone

• shorter

• darker