Science Class 6th

601.________ explode with thunder like sound.

A. Bolides

B. Meteors

C. Brilliant meteors

D. None of these

602. Faint meteors are also called?

A. Shooting stars

B. Falling stars

C. Meteor shower

D. All of these

603. Large meteors , sometimes strike surface of earth is called?

A. Meteor

B. Bolloids

C. Meteorites

D. None of these

604. A gigantic meteorite struck the earth in Arizona some _____ years ago.

A. 5000-50000

B. 6000

C. 8000

D. 6300

605. A ______ meter wide and 180 meter deep crater was created by meteor in Arizona.

A. 500

B. 1200

C. 600

D. 900

606. A much larger meteorite of about _____ km is believed to crashed on the earth some 60 million years ago.

A. 12

B. 10

C. 5

D. 20

607. Some Scientists believe that Dinosaurs have died because of ______.

A. Asteroids

B. Comets

C. Meteorites

D. None

608. In the mid of 20 th century, _______ race between USA and USSR started to create rocket to reach space.

A. Run

B. Marathon

C. Space

D. None

609. A velocity needed to escape earth’s gravity is called ______ velocity

A. Run

B. Escape

C. None of these

610. Escape velocity is equal to ________ km/hr.

A. 5000

B. 60000

C. 40000

D. None

611. _________ scientists first launched artificial satellite in 1957.

A. Soviet

B. American

C. German

D. Indian

612. Russian Satellite ________ was first satellite in space.

A. Sputnik-1

B. Apollo

C. None of these

613. A velocity needed to escape earth’s gravity is called ______ velocity.

A. Run

B. Escape

C. None of these

614. Escape velocity is equal to ________ km/hr

A. 5000

B. 60000

C. 40000

D. None

615. _________ scientists first launched artificial satellite in 1957

A. Soviet

B. American

C. German

D. Indian

616. 50. Russian Satellite ________ was first satellite in space.

A. Sputnik-1

B. Apollo

C. None of these

617. The goal of Sputnik satellite was to ?

A. Study upper atmosphere

B. Testing Rocket Technology

C. Both ‘a’ and ‘b’

D. None of these

618. Which of the following was unmanned satellite?

A. Sputnik-1

B. Sputnik-2

C. None of these

619. Sputnik-2 has a _______

A. Cat

B. Dog

C. Mouse

620. The speed of Geostationary satellite is equal to?

A. Speed of Sound

B. Speed of earth

C. Speed of light

D. None of these

621. Geostationary satellites are ___________ satellites revolving around in the Geostationary orbits

A. Military

B. Communication

C. Weather

D. Non

622. Paksat-IR, a Pakistani Geostationary orbit was launched in?

A. 2019

B. 2011

C. 2005

D. 2006

623. The satellites move in which of following orbits?

A. Polar Orbit

B. Eccentric Orbit

C. Low earth orbit

D. All of these

624. Landsat satellites are used for

A. Mapping Land

B. Estimating Crop Production

C. Managing forested land

D. All of these

625. ________ satellites link remote areas of earth with TV and telephone.

A. Communication Satellite.

B. Geo Stationary Satellite

C. Landsat

D. None

626. The function of Polar Satellite is?

A. Weather information

B. Protection from atmospheric dangers

C. Mapping Ozone levels

D. All of these

627. GPS is a group of ________ satellites.

A. 24

B. 25

C. 30

D. 35

628. Function of GPS satellite is?

A. Location

B. Speed

C. Direction

D. All of these

629. Telecommunication Satellites help in carrying_____ signals?

A. Radio

B. Telephone

C. TV

D. All of these

630. Location of earth is pinpointed by _________ satellites

A. Landsat

B. Communication

C. Navigational

D. None

631. Military activities are monitored through __________ satellite.

A. Surveillance

B. Navigational

C. Landsat

D. None of these

632. Scientific Satellites give information about?

A. Comets

B. Sun

C. Galaxies

D. All of these

633. _______ was the first man to enter and exit space safely.

A. Mark

B. Yuri Gagarin

C. Newton

D. None of these

634. ______ was the first woman to travel space.

A. Curie

B. Valentina Tereshkova

C. Alina

D. None

635. _______ were the first Americans to step on moon in 1969.

A. Neil Armstrong

B. Edwin Aldrin

C. Both ‘a’ and ‘b’

D. None